O'Reilly

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This article is about the surname. For other uses, see O'Reilly (disambiguation).
O'Reilly
Family name
Meaning "descendant of Reilly (outgoing people)"
Region of origin Ireland
Language(s) of origin Irish
Related names Reilly, Riley, O'Riley

O'Reilly /əˈrli/ is the Anglicised form of the Gaelic Ó Raghallaigh.[1] It is also the patronymic form of the Irish name Reilly (Irish Gaelic: Uí Raghaile).[2] It is commonly found throughout Ireland, with the greatest concentration of the surname found in County Cavan followed by Longford, Meath, Westmeath, Fermanagh and Monaghan, and the Province of Leinster. O'Reilly is ranked tenth in the top twenty list of Irish surnames.

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People[edit]

People with the surname O'Reilly include:[3]

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