The ancient genealogy of the Geoghegans acording to O'Hart's Irish Pedigrees.

Irish mythology records that every family was descended from a certain Milesius of Spain who in about 500 BC led his followers to invade and conquer Ireland. The Christian monks who wrote these genealogies down in the 9th century, 2,500 years after Milesius, also added their own beliefs. So they recorded that Milesius was the 36th in descent from Adam! O'Hart, being both an ardent believer in the Gaelic myths and Christianity, followed their example. In his Gaelic genealogies a number representing the generation of descent from Adam precedes every generation. O'Hart showed, probably incorrectly, that every Gaelic family was descended from four of Milesius's family. These were his three sons, Heber, Ir and Heremon, and his uncle Ithe. These four were considered the 'stem' lines of the genealogies that followed. The latest scientiific evidence suggests that while the Celts had an overwhelming cultural influence on Ireland, the numbers of them that invaded Ireland were not all that huge and from the genetic point of view they are just a part of the mix that made up the Irish population.
In short, while the pedigree below is interesting, it should be be read with a sceptical eye, and the further back you go, the more sceptical your eye should become.

1. Adam
2. Seth
3. Enos
4. Cainan
5. Mahalaleel
6. Jared
7. Enoch
8. Methuselah
9. Lamech
20. Baouman;
21 Ogaman; and
25. Heber Glunfionn was born in Gothia, where he died. His posterity continued there to the eighth generation; and were kings or chief rulers there for one hundred and fifty years-some say three hundred years.
26 Agnan Fionn;
27. Febric Glas;
28. Nenuall;
29. Nuadhad;
30. Alladh;
31. Arcadh; and
47. Rotheachtach: his son; was the 22nd Monarch; slain, B.C. 1357, by Sedne (or Seadhna), of the Line of Ir.
49. Siorna "Saoghalach" (long-oevus): his son; was the 34th Monarch; he obtained the name "Saoghalach" on account of his extraordinary long life; slain, B.C 1030, at Aillin, by Rotheachta, of the line of Heber Fionn, who usurped the Monarchy, thereby excluding from the throne -
50. Olioll Aolcheoin: son of Siorna Saoghalach.
55. Muredach Bolgach: his son; was the 46th Monarch; killed by Eadhna Dearg, B.C. 892; he had two sons - Duach Teamhrach, and Fiacha.
59. Ugaine Mór: his son. This Ugaine (or Hugony) the Great was the 66th Monarch of Ireland. Was called Mór on account of his extensive dominions, - being sovereign of all the Islands of Western Europe. Was married to Cæsair, daughter to the King of France, and by her had issue - twenty-two sons and three daughters. In order to prevent these children encroaching on each other he divided the Kingdom into twenty-five portions, allotting to each his (or her) distinct inheritance. By means of this division the taxes of the country were collected during the succeeding 300 years. All the sons died without issue except two, viz: - Laeghaire Lorc, ancestor of all the Leinster Heremonians; and Cobthach Caolbhreagh, from whom the Heremonians of Leath Cuinn, viz., Meath, Ulster, and Conacht derive their pedigree.
Ugaine was at length, B.C. 593, slain by Badhbhchadh, who failed to secure the fruits of his murder - the Irish Throne, as he was executed by order of Laeghaire Lorc, the murdered Monarch's son, who became the 68th Monarch.
62. Iaran Gleofathach: his son; was the 74th Monarch; was a King of great justice and wisdom very well learned and possessed of many accomplishments; slain by Fear-Chorb, son of Modh-Chorb, B.C. 473.
70. Fionnlogh: his son.
71. Fionn: his son; m. Benia, daughter of Criomthan; had two sons.
72. Eochaidh Feidlioch: his son; was the 93rd Monarch; m Clothfionn, daughter of Eochaidh Uchtleathan, who was a very virtuous lady. By him she had three children at a birth - Breas, Nar, and Lothar (the Fineamhas), who were slain at the battle of Dromchriadh; after their death, a melancholy settled on the Monarch, hence his name "Feidhlioch."
He also divided the government of these Provinces amongst his favourite courtiers: - Conacht he divided into three parts between Fiodhach, Eochaidh Allat, and Tinne, son of Conragh, son of Ruadhri Mór, No 62 on the "Line of Ir;" Ulster (Uladh) he gave to Feargus, the son of Leighe; Leinster he gave to Ros, the son of Feargus Fairge; and the two Munsters he gave to Tighernach Teadhbheamach and Deagbadah.
75. Crimthann-Niadh-Nar: his son; who was the 100th Monarch of Ireland, and styled "The Heroic." It was in this Monarch's reign that our Lord and Saviour JESUS CHRIST was born.
Tuathal married Baine, the daughter of Sgaile Balbh, King of England.
81. Art Eanfhear ("art:" Irish, a bear, a stone; noble, great, generous; hardness, cruelty. "Ean:" Irish, one; "fhear," "ar," the man; Gr. "Ar," The Man, or God of War): son of Conn of the Hundred Fights; a quo O'h-Airt, anglicised O'Hart. This Art, who was the 112th Monarch of Ireland, had three sisters - one of whom Sarad was the wife of Conaire Mac Mogha Laine, the 111th Monarch, by whom she had three sons called the "Three Cairbres," viz. - 1. Cairbre (alias Eochaidh) Riada - a quo "Dalriada," in Ireland, and in Scotland; 2. Cairbre Bascaon; 3. Cairbre Musc, who was the ancestor of O'Falvey, lords of Corcaguiney, etc. Sabina (or Sadhbh), another sister, was the wife of MacNiadh [nia], half King of Munster (of the Sept of Lughaidh, son of Ithe), by whom she had a son named Maccon; and by her second husband Olioll Olum she had nine sons, seven whereof were slain by their half brother Maccon, in the famous battle of Magh Mucroimhe [muccrove], in the county of Galway, where also the Monarch Art himself fell, siding with his brother-in-law Olioll Olum against the said Maccon, after a reign of thirty years, A.D. 195. This Art was married to Maedhbh, Leathdearg, the daughter of Conann Cualann; from this Queen, Rath Maedhbhe, near Tara, obtained its name.
82. Cormac Ulfhada: son of Art Eanfhear; m. Eithne, daughter of Dunlang, King of Leinster; had three elder brothers - 1. Artghen, 2. Boindia, 3. Bonnrigh. He had also six sons - 1. Cairbre Lifeachar, 2. Muireadach, 3. Moghruith, 4. Ceallach, 5. Daire, 6. Aongus Fionn: Nos. 4 and 5 left no issue. King Cormac Mac Art was the 115th Monarch of Ireland; and was called "Ulfhada," because of his long beard. He was the wisest, most learned, and best of any of the Milesian race before him, that ruled the Kingdom. He ordained several good laws; wrote several learned treatises, among which his treatise on "Kingly Government," directed to his son Carbry Liffechar, is extant and extraordinary. He was very magnificent in his housekeeping and attendants, having always one thousand one hundred and fifty persons in his daily retinue constantly attending at his Great Hall at Tara; which was three hundred feet long, thirty cubits high, and fifty cubits broad, with fourteen doors to it. His daily service of plate, flagons, drinking cups of gold, silver., and precious stone, at his table, ordinarily consisted of one hundred and fifty pieces, besides dishes, etc., which were all pure silver or gold. He ordained that ten choice persons should constantly attend him and his successors - Monarchs of Ireland, and never to be absent from him, viz. - 1. A nobleman to be his companion; 2. A judge to deliver and explain the laws of the country in the King's presence upon all occasions; 3. An antiquary or historiographer to declare and preserve the genealogies, acts, and occurrences of the nobility and gentry from time to time as occasion required; 4. A Druid or Magician to offer sacrifice, and presage good or bad omens, as his learning, skill, or knowledge would enable him; 5. A poet to praise or dispraise every one according to his good or bad actions; 6. A physician to administer physic to the king and queen, and to the rest of the (royal) family; 7. A musician to compose music, and sing pleasant sonnets in the King's presence when there-unto disposed; and 8, 9, and 10, three Stewards to govern the King's House in all things appertaining thereunto. This custom was observed by all the succeeding Monarchs down to Brian Boromha [Boru], the 175th Monarch of Ireland, and the 60th down from Cormac, without any alteration only that since they received the Christian Faith they changed the Druid or Magician for a Prelate of the Church.
What is besides delivered from antiquity of this great Monarch is, that (which among the truly wise is more valuable than any worldly magnificence or secular glory whatsoever) he was to all mankind very just, and so upright in his actions, judgments, and laws, that God revealed unto him the light of His Faith seven years before his death; and from thenceforward he refused his Druids to worship their idol-gods, and openly professed he would no more worship any but the true God of the Universe, the Immortal and Invisible King of Ages. Whereupon the Druids sought his destruction, which they soon after effected (God permitting it) by their adjurations and ministry of damned spirits choking him as he sat at dinner eating of salmon, some say by a bone of the fish sticking in his throat, A.D. 266, after he had reigned forty years. Of the six sons of Cormac Mac Art, no issue is recorded from any [of them], but from Cairbre-Lifeachar; he had also ten daughters, but there is no account of any of them only two - namely, Grace (or Grania), and Ailbh [alve], who were both successively the wives of the great champion and general of the Irish Militia, Fionn, the son of Cubhall [Coole]. The mother of Cormac MacArt was Eachtach, the daughter of Ulcheatagh.
83. Cairbre-Lifeachar, the 117th Monarch of Ireland: son of King Cormac Mac Art; was so called from his having been nursed by the side of the Liffey, the river on which Dublin is built. His mother was Eithne, daughter of Dunlong, King of Leinster. He had three sons - 1. Eochaidh Dubhlen; 2. Eocho; and 3. Fiacha Srabhteine, who was the 120th Monarch of Ireland, and the ancestor of O'Neill, Princes of Tyrone. Fiacha Srabhteine was so called, from his having been fostered at Dunsrabhteine, in Connaught; of which province he was King, before his elevation to the Monarchy. After seventeen years' reign, the Monarch Cairbre Lifeachar was slain at the battle of Gabhra [Gaura], A.D. 284, by Simeon, the son of Ceirb, who came from the south of Leinster to this battle, fought by the Militia of Ireland, who were called the Fiana Erionn (or Fenians), and arising from a quarrel which happened between the; in which the Monarch, taking part with one side against the other, lost his life.
84. Fiacha Srabhteine, King of Conacht, and the 120th Monarch of Ireland: son of Cairbre-Liffechar; married Aoife, daughter of the King of Gall Gaodhal. This Fiacha, after 37 years' reign, was, in the battleof Dubhcomar, A.D. 322, slain by his nephews, the Three Collas, to make room for Colla Uais, who seized on, and kept, the Monarchy for four years. From those three Collas the "Clan Colla" were so called.
85. Muireadach Tireach: son of Fiacha Srabhteine; m. Muirion, daughter of Fiachadh, King of Ulster; and having, in A.D. 326, fought and defeated Colla Uais, and banished him and his two brothers into Scotland, regained his father's Throne, which he kept as the 122nd Monarch for 30 years.
86. Eochaidh Muigh-Meadhoin [Moyvone]: his son; was the 124th Monarch; and in the 8th year of his reign died a natural death at Tara, A.D. 365; leaving issue four sons, viz., by his first wife Mong Fionn: - I. Brian; II. Fiachra; III. Olioll; IV. Fergus. And, by his second wife, Carthan Cais Dubh (or Carinna), daughter of the Celtic King of Britain, - V. Niall Mór, commonly called "Niall of the Nine Hostages." Mong Fionn was daughter of Fiodhach, and sister of Crimthann, King of Munster, of the Heberian Sept, and successor of Eochaidh in the Monarchy. This Crimthann was poisoned by his sister Mong-Fionn, in hopes that Brian, her eldest son by Eochaidh, would succeed in the Monarchy. To avoid suspicion she herself drank of the same poisoned cup which she presented to her brother; but, notwithstanding that she lost her life by so doing, yet her expectations were not realised, for the said Brian and her other three sons by the said Eochaidh were laid aside (whether out of horror of the mother's inhumanity in poisoning her brother, or otherwise, is not known), and the youngest son of Eochaidh, by Carthan Cais Dubh, was preferred to the Monarchy. I. Brian, from him were descended the Kings, nobility and gentry of Conacht - Tirloch Mór O'Connor, the 121st, and Roderic O'Connor, the 183rd Monarch of Ireland. II. Fiachra's descendants gave their name to Tir-Fiachra ("Tireragh"), co. Sligo, and possessed also parts of co. Mayo. III. Olioll's descendants settled in Sligo - in Tir Oliolla (or Tirerill). This Fiachra had five sons: - 1. Earc Cuilbhuide; 2. Breasal; 3. Conaire; 4. Feredach (or Dathi); and 5. Amhalgaidh.
87. Niall Mór: son of Eochaidh Muigh-Meadhoin; a quo the "Uí Néill" of Ulster, Meath, and Conacht.
In Niall's rise to Kingship he had to overcome his wicked stepmother, Mongfhinn, who abandoned him as a baby, naked on a hill. He is raised by a wandering bard, Torna Eices. Sithchenn the Smith fortells he will be High King. Then he comes across an old hag who demands that he and his companions give her a kiss. Only Niall has the courage to do so, and she turns into a beautiful woman named Flaithius ( Royalty), the personification of sovranty. She fortells that he will be the greatest of Ireland's High Kings. Niall is a very interesting historical figure, curiously enough part of his story starts in England in 1919. In that year archeologists discovered a hoard of Roman silver plate, dating from Valens (365-378) to the early reign of Honorous (395-423 AD.). This find was compared to 1,506 Roman silver coins from a 1854 excavation in County Londonderry which dated from Constantius II to Honorius. It created great debate among English historians as to how these coins were brought to England from the continent and buried. These and other finds had coins from earlier times up to Honorus, but none beyond. Including the North Mendip hoard; 2,042 coins from Constans to Honorous, there were approximately 13 finds altogether. Who brought these coins to England and Northern Ireland? After the Roman Emperor Theodosius I died (January 17, 385) it gave the green light to the Franks, Saxons, Picts, Scots and Irish to sack the European Continent, and they did. Honorius succeeded his father Theodosius and sent The Roman Army under the Vandal Stilcho north to take care of the raiders. Stilcho was successful in putting down the raiders on the continent, but he could not stop the raiders from Ireland. The Roman historian Claudian makes it clear that" the most formidable onslaught had come from Ireland under one powerful leader acting in co-operation with the Picts and Saxons." Here is where we get back to Niall, the Irish Annals of the Four Masters states that "Niall began to reign in 379. He was not only the paramount king of Ireland, but one of the most powerful to ever hold that office, and was therefore one of the few Irish kings able to mobilize great forces for foreign expeditions." Niall went to Scotland in order to strengthen his power and gained alliances with the Scots and Picts, he then marched to Laegria and sent a fleet to Armorica (France) in order to plunder. He established the Dal Riada which was the name for this conglomeration of Irish, Scots and Picts. These raids led to amazing results. Keating in his History of Ireland states that "St. Patrick was brought as a captive to Ireland in the ninth year in the reign of Niall," it was this time when Niall was on his expedition to Scotland and France. An Irish fleet went to the place where Patrick dwelt, then aged 16 years, and as was the custom of the Irish, they brought a large number of hostages with them along with Patrick's two sisters Lupida and Daererca. Niall had pillaged Wales, Scotland, England and France. Keating also states that "Niall having taken many captives returned to Ireland and proceeded to assemble additional forces and sent word to the chief of the Dal Riada, requesting him to follow with all his host to France." Niall set out for the new adventure with Gabhran, the chief of the Del Raida, to plunder France at the river Loire. With this group was Eochaida who had been banished as the King of Leinster and had plans to be the High King of Ireland. While crossing The English Channel Niall was killed by an arrow from Eochaida. Niall had been High King of Ireland for twenty-seven years. Niall played a great part in breaking down Roman power in Britain and France between the years of 379 and 406. Keating states that "Wales ceased to be controlled by the central government from 380-400 due to Niall". Prof. Sir William Ridgeway states that the coins found in the excavations mentioned earlier were brought back by Niall's companions after his death and buried. And the interest created by the coins helped to make Niall a historical reality. A lot of what is now known about Niall was found while digging around to answer the questions about the coins. Niall of the Nine Hostages died a pagan, but after the dawn of Christianity in Ireland, his descendants were foremost in promoting and endowing the Christian Church in Ireland, and nearly 300 of them were canonized as Saints.
He was twice married: - his first Queen was Inne, the daughter of Luighdheach, who was the relict of Fiachadh; his second Queen was Roigneach, by whom he had Nos. I., II., III., IV., V., VI., and VII., as given below. This Niall Mór succeeded his Uncle Crimthann; and was the 126th Monarch of Ireland. He was a stout, wise, and warlike prince, and fortunate in all his conquests and achievements, and therefore called "Great." He was also called Niall Naoi-Ghiallach or "Niall of the Nine Hostages," from the royal hostages taken from nine several countries by him subdued and made tributary: viz., - 1. Munster, 2. Leinster, 3. Connacht, 4. Ulster, 5. Britain, 6. the Picts, 7. the Dalriads, 8. the Saxons, and 9. the Morini - a people of France, towards Calais and Piccardy; whence he marched with his victorious army of Irish, Scots, Picts, and Britons, further into France, in order to aid the Celtic natives in expelling the Roman Eagles, and thus to conquer that portion of the Roman Empire; and, encamping on the river Leor (now called Lianne), was, as he sat by the river side, treacherously assassinated by Eocha, son of Enna Cinsalach, king of Leinster, in revenge of a former "wrong" by him received from the said Niall. The spot on the Leor (not "Loire") where this Monarch was murdered is still called the "Ford of Niall," near Boulogne-sur-mer. It was in the ninth year of his reign that St. Patrick was first brought into Ireland, at the age of 16 years, among two hundred children brought by the Irish Army out of Little Brittany (called also Armorica), in France. Niall Mór was the first that gave the name of Scotia Minor to "Scotland," and ordained it to be ever after so called; until then it went by the name of "Alba."
Niall had twelve sons: - I. Eoghan (who gave his name to Tir Eoghain or Tyrone); II. Laeghaire (or Leary), the 128th Monarch, in the 4th year of whose reign St. Patrick, the second time, came into Ireland to plant the Christian Faith, A.D. 432; III. Conall Crimthann, ancestor of O'Melaghlin, Kings of Meath; IV. Conall Gulban, ancestor of O'Donnell (princes, lords, and earls of the territory of Tirconnell - Donegal), and of O'Boyle, O'Dogherty, O'Gallagher, etc.; V. Fiacha, from whom the territory from Birr to the Hill of Uisneach in Media Hiberniae (or Meath) is called "Cineal Fiacha," and from him MacGeoghagan, lords of that territory, O'Molloy, O'Donechar, Donaher (or Dooner), etc., derive their pedigree; VI. Main, whose patrimony was all the tract of land from Lochree to Loch Annin, near Mullingar, and from whom are descended Fox (lords of the Muintir Tagan territory), MacGawley, O'Dugan, O'Mulchonry (the princes antiquaries of Ireland), O'Henergy, etc.; VII. Cairbre, ancestor of OFlanagan, of Tua Ratha, "Muintir Cathalan" (or Cahill) etc.; VIII. Fergus (a quo "Cineal Fergusa" or Ferguson), ancestor of O'Hagan, etc.; IX. Enna; X. Aongus or Æneas; XI. Ualdhearg; and XII. Fergus Altleathan. Of these last four sons we find no issue.
88. Fiach: son of Niall of the Nine Hostages.
89. Tuathal: his son; whose brother Eochaidh was ancestor of Molloy, and other brother Uigin, the ancestor of Higgins.
90. Amhailgadh [Awly]: son of Tuathal.
91. Coscrach: his son.
92. Eochagán ("each:" Irish, a horse; Lat. "eq - uus;" Gr. "ikk - os"), meaning a little horse:" his son; a quo MacEochagáin (Geoghegan).
93. Rory: his son.
94. Awly (2): his son.
95. Giollacolum: his son.
96. Creamthann: his son.
97. Eochaidh: his son.
98. Florence: his son.
99. Awly (3): his son.
100. Donoch: his son.
101. Congal: his son.
102. Anluan: his son.
103. Coscrach (2): his son; a quo Cnoc Ui Coscraigh.
104. Malachi: his son.
105. Murtach: his son.
106. Congal (2): his son.
107. Cucogar: his son.
108. Cucalma ("calma:" Irish, brave; Heb. "chalam," he prevailed): his son; a quo MacCalma, anglicised MacCalmont, and Culm.
109. Murtach (2): his son.
110. Congal (3): his son.
111. Congal (4): his son.
112. Donoch (2): his son.
113. Congal (5): his son.
114. Murtach Mór: his son.
115. Donoch (3): his son.
116. Dermod: his son.
117. Aodh Buidhe (Hugh Boy): his son.
118. Conla: his son; had one brother.
119. Leineach Cairach: his son.
120. Conchobhar [connor]: his son.
121. Conla (2): his son.
122. Ros: his son.
123. Neal: his son; had three brothers.
124. Conall: his son; had an elder brother named Ros, whose only son named Richard died without issue.
125. Conla (2): son of Conall.
126. Charles: his son; had two brothers.
127. Connor MacGeoghagan of Moycashel: his son; living in 1690.

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