Släkthistoria för Oreilly
Oreilly Vad efternamn betyder
Irish (Cavan Meath): Anglicized form of Gaelic Ó Raghailligh ‘descendant of Raghailleach’ Old Irish Roghallach a personal name of unexplained etymology. This is the name of a chieftain family in County Cavan related to the O'Rourkes. In Anglicized form it has also been confused with Ó Raithile found in Munster usually Anglicized as O'Rahilly.
Källa: Dictionary of American Family Names 2nd edition, 2022
