mac mac died known dublin member dublin family significance early twelfth century control wealthy coastal kingdom contested members immediate family securing power brief periods time period overlord dublin death close ally high king ireland enemies critical point reign lost support contributed expulsion ireland year long return significant military assistance mercenary english half dublin fell combined forces mac powerful english magnate earl collapse kingdom dublin elite forced flee source calls northern islands reference year later long death attempted regain english unfortunately invasion dublin ended utter failure executed english governor town immediately following fall dublin besieged combined force town remained firmly hands english end year dublin passed direct control henry_ii king england converted english royal town background father mac died man ruled king dublin men members substantial kingdom members family held twelfth century man uncle king dublin slain twelfth century kingdom died ultimate king died year death numerous sources indicate force tow formally rendered submission mac annals reveals gained unprecedented authority dublin reason suspect success stemmed assistance received example recorded source laid siege town year fact military campaign undertaken counter attempt install king isles died dublin recounted chronicle record events mid twelfth century suggests based dublin enjoyed cooperation indigenous leaders dublin emergence period fit context indigenous ruler found sought leadership isles endure evidenced episode concerning mac considerable authority dublin point apparent ecclesiastical grants foundations appointments furthermore major military operations undertaken dublin forces certainly conducted mac authority campaign recorded concerned naval manoeuvres wales service henry_ii king england died campaign recorded annals consisted involvement ill fated invasion mainland scotland launched mac king isles died fall mac rise mac slain leaving fend enemies mac man making bid high king died year mac demise allies dublin ireland altogether duly recognised high king ireland according annals masters secured cooperation dublin gained town cows consequence formed forces marched forced submissions kings respectively fact dublin appears formed key arsenal apparent doomed support coastal kingdom certainly earl relates abandoned overlord annals specify ireland turned appears allowed retain annals masters reveals assisted king died forcing mac final authority exile following year convened great assembly annals masters states horsemen attended meeting supplied dublin rulers recorded attended gathering certain mac styled lord foreigners title suggest brother mistake expulsion ireland sought henry continent gained permission recruit military aid subjects autumn mac english allies arrived ireland established responded penetrating campaign recounted included military support dublin kept check preoccupied allowed hold arrival english dublin fall situation ireland remained relatively unchanged arrival significant force mercenaries summer mac began come according earl kings described source lord dublin refused support mac cause apparent force designed annals masters states led army joined forces kings combined army marched dublin following year saw arrival english support august earl died landed ireland took storm soon married daughter effectively heir dublin later september combined forces mac marched dublin confronted forces account annals masters believed switched sides point deserted cause suffered act divine justice town went flames hand whilst negotiations way forces coalition english force command died successfully assaulted town caused considerable inhabitants annals masters slaughtered fortress english carried cattle goods instead states majority escaped massacre retained possessions source states managed escape northern islands term refer hand possible term refers source appear evidence retained close links isles according version events preserved earl coalition conquest dublin took place september final defeat death weeks mac death beginning reveals return dublin account events recorded song earl indicate forces consisted heavily armoured source numbers forces ships whilst gives according sources followers included notable warrior named john mad figure identical saga character according earl invaders landfall located southern bank proceeded outside town walls relates assaulted walls eastern gate location corresponds focus assault identified earl unfortunately operation utter failure resulted capture death sources relate town defenders led brother richard successfully repulsed invaders john captured fled fleet reveals life originally reserved ransom source earl report soon beheaded account successive deaths appear left power vacuum dublin fill immediately fall english controlled town besieged records archbishop dublin died sent isles asking blockade dublin sea according source threat english domination inspired successes english men isles act quickly wind north west immediately sailed thirty ships warriors harbour unfortunately irish blockade ultimately failure dublin remained firmly hands english dublin end year relinquished possession lord henry converted english royal town
Ascall mac Ragnaill