Who was the brother of Tostig Godwinson that overthrew Gruffydd, Rhiwallon, and Bleddyn?
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Rhiwallon ap Cynfyn Rhiwallon ap Cynfyn (c. 1020 – c. 1069 ) was a Welsh King. the son of Cynfyn ap Gwerstan and brother of King Bleddyn of Powys. Through his mother Angharad, he was half-brother to King Gruffydd ap Llywelyn as well. Following the 1063 invasion of Wales by Harold and Tostig Godwinson that overthrew Gruffydd, Rhiwallon and Bleddyn jointly received Powys and Gwynedd on condition of faithfully serving Edward the Confessor "everywhere by water and by land".
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Tostig Godwinson Tostig Godwinson ( 1026 – 25 September 1066) was an Anglo-Saxon Earl of Northumbria and brother of King Harold Godwinson. After being exiled by his brother, Tostig supported the Norwegian king Harald Hardrada's invasion of England, and was killed at the Battle of Stamford Bridge.
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Gruffudd ap Cynan Gruffudd ap Cynan (c. 1055 – 1137), sometimes written as Gruffydd ap Cynan, was King of Gwynedd from 1081 until his death in 1137. In the course of a long and eventful life, he became a key figure in Welsh resistance to Norman rule, and was remembered as King of all Wales. As a descendant of Rhodri Mawr, Gruffudd ap Cynan was a senior member of the princely House of Aberffraw.
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William II of England William II (Old Norman: "Williame"; c. 1056  – 2 August 1100), the third son of William I of England, was King of England from 1087 until 1100, with powers over Normandy, and influence in Scotland. He was less successful in extending control into Wales. William is commonly known as William Rufus or William the Red, perhaps because of his red-faced appearance.
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Hychddwn Hychddwn Hir (from the Welsh "hych", "Swine" and "hir", "Long") appears in the fourth of the Four Branches of the Mabinogi and is one of the three sons of Gwydion and Gilfaethwy. As punishment for the rape of Goewin, Math banished his nephews, turning them into a breeding pair of deer for a year, then wolves, and finally pigs. They had three children over the three years: Hyddwn, Hychddwn, and Bleiddwn. Hychddwn is the offspring of the pig pairing. Math took him and transformed him into a human being, baptising him Hychddwn Hir ("Tall piglet").
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Catellus Catellus (Welsh: "Kadell map Geraint" ) was a legendary king of the Britons, as recounted in Geoffrey of Monmouth's work "Historia Regum Britanniae". According to Geoffrey, he was the son of King Gerennus and was succeeded by his son, Millus. In some versions of the "Brut y Brenhinedd", a series of Welsh versions of Geoffrey's "Historia", Catellus is succeeded by his son Coel, who is then succeeded by his own son Porrex II.
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Castell Du Castell Du (), also known as Sennybridge Castle or Castell Rhyd-y-Briw, is located approximately eight miles west of Brecon in Powys, Wales, and is believed to be the work of Llywelyn ap Gruffudd, Prince of Wales. Its history is largely obscure, but a reference to a castle at Rhyd-y-Briw in a document of 1271 is believed to refer to the fortification, and it is not unreasonable to assume that work commenced on it during Llywelyn's triumphal years in the 1260s. Its life would seem to have been short, as there is no further reference to it in thirteenth-century documents, and it seems likely that it was captured by the forces of Edward I of England during the war of 1276–7 and subsequently abandoned. Much of the site remains to be excavated; the remains of a D-shaped tower are visible, and two other towers may lie under pill-boxes erected during the Second World War.
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Gwalchmai ap Meilyr Gwalchmai ap Meilyr (fl. 1130 – 1180) was a Welsh language court poet from Anglesey who composed poems in praise of Owain Gwynedd, king of Gwynedd, and his brothers. He was the son of another poet, Meilyr Brydydd, and father of the poets Meilyr ap Gwalchmai and Einion ap Gwalchmai. He shares his name with Gwalchmei ap Gwyar, a figure from Welsh legend described as the nephew of Arthur and known in English as Gawain.
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Gaheris Gaheris (Old French: Gaheriet or Gaheriez) is a character in the Arthurian legend, a nephew of King Arthur and a knight of the Round Table, the third son of Arthur's sister or half-sister Morgause and her husband Lot, King of Orkney and Lothian. He is the younger brother of Gawain and Agravaine, and the older brother of Gareth and half-brother of Mordred.
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Owain Cyfeiliog Owain ap Gruffydd (c. 1130–1197) was a prince of the southern part of Powys and a poet. He is usually known as Owain Cyfeiliog to distinguish him from other rulers named Owain, particularly his contemporary, Owain ap Gruffydd of Gwynedd, who is known as Owain Gwynedd.
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The Anarchy The Anarchy was a civil war in England and Normandy between 1135 and 1153, which resulted in a widespread breakdown in law and order. The conflict was a succession crisis precipitated by the accidental death of William Adelin, the only legitimate son of Henry I, in 1120. Henry's attempts to install his daughter, the Empress Matilda, as his successor were unsuccessful and on Henry's death in 1135, his nephew Stephen of Blois seized the throne with the help of Stephen's brother, Henry of Blois, Bishop of Winchester. Stephen's early reign was marked by fierce fighting with English barons, rebellious Welsh leaders and Scottish invaders. Following a major rebellion in the south-west of England, Matilda invaded in 1139 with the help of her half-brother, Robert of Gloucester.
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Cadwgan ap Bleddyn Cadwgan ap Bleddyn (1051–1111) was a prince of the Kingdom of Powys (Welsh: "" ) in eastern Wales.
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Eadulf Rus Eadulf Rus (fl. 1080) was an 11th-century Northumbrian noble. He was either the son or grandson of Gospatric (son of Uhtred the Bold), possibly the man who soon after Christmas 1064 was allegedly killed on behalf of Tostig, Earl of Northumbria. This murder by Tostig led to a great northern revolt against Edward the Confessor, a revolt that turned both King Edward and Harold Godwinson against Tostig and led to the appointment of the Mercian, Morcar, as Earl of northern England.
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Hawys Gadarn Hawys Gadarn, also known as the Hardy, the Powerful, the Intrepid and Hawise de la Pole (1291 –  1353 ) was the daughter of Owen de la Pole and heir to Powys Wenwynwyn in Wales. She was married to John Charleton after seeking the intervention of Edward II of England to support her inheritance against the schemes of four of her uncles to take her lands.
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Enniaunus Enniaunus ("Welsh:" "Einion mab Arthal") was a legendary king of the Britons as recounted by Geoffrey of Monmouth. He was the son of King Archgallo and brother of Marganus II. According to Geoffrey, he ruled poorly and harshly causing him to be deposed due to tyranny. He was replaced with his cousin, Idvallo.
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William Bigod William Bigod, the heir to the Norfolk earldom, drown in the disaster of the White Ship as she set sail from Normandy in 1120. The ship also carried the son of the King of England Henry I, William Adelin, who also died. The succession of Henry I to the throne of England was secured not only by the mysterious death of his brother King William II Rufus and by the defeat of his eldest brother Robert Courthouse, Duke of Normandy. The death of Henry's heir to the throne set in motion a succession crisis that lasted many years.
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Einion ap Gwalchmai The Welsh court poet Einion ap Gwalchmai (fl. 1202–1223) was the son of the poet Gwalchmai ap Meilyr and brother of the poet Meilyr ap Gwalchmai. He lived in Gwynedd. Some lines of a praise poem to Llywelyn ab Iorwerth, Prince of Gwynedd, have survived, together with three impressive religious awdlau (odes).
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Harald III of Denmark Harald III (Harald the Whetstone, Danish: "Harald Hen" ;  1040 – April 17, 1080) was King of Denmark from 1076 to 1080. Harald III was an illegitimate son of Danish king Sweyn II Estridsson, and contested the crown with some of his brothers. He was a peaceful ruler who initiated a number of reforms. Harald was married to his cousin Margareta Hasbjörnsdatter, but did not leave any heirs, and was succeeded by his brother Canute IV the Saint. Four of his half-brothers were in turn crowned Danish kings.
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Maredudd ap Gruffydd Maredudd ap Gruffydd (1130–1155) was a prince of the kingdom of Deheubarth in Southwest Wales.
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Cinuit of Alt Clut Cinuit (Welsh: "Cynwyd" ) may have been an early ruler of the Brittonic kingdom of Alt Clut, later known as Strathclyde, in Britain's "Hen Ogledd" or "Old North". The Harleian genealogies indicate that he was the son of Ceretic Guletic, who may be identified with the warlord "Ceredig" rebuked by Saint Patrick in one of his letters. According to the same pedigrees, he was the father of Dumnagual Hen, an important but obscure ancestor figure in Welsh tradition. The later genealogy "Bonedd Gwŷr y Gogledd" replaces Cinuit as Dumnagual's father with a certain Idnyuet, said to be the son of Maxen Wledic (the Roman usurper Magnus Maximus). However, the "Bonedd" does include a "Cynwyd Cynwydion" in the ancestry of Clydno Eiddyn, and a Triad attached to the text mentions the "three hundred swords of the (tribe of) Cynwydion" as one of three formidable north British war bands, along with those of Coel Hen and Cynfarch.
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Ælfwig (abbot) Ælfwig (died 1066), was the abbot of New Minster, the uncle of Harold, and was probably the brother of Earl Godwine.
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King of Wales King of Wales was a very rarely used title, because Wales, much like Ireland, never achieved a degree of political unity, like that of England or Scotland during the Middle Ages. While many different leaders in Wales claimed the title of 'King of Wales', the country was only truly united once: under the rule of Gruffydd ap Llywelyn from 1055 to 1063.