O'Beirne — Irish Surname Origin & Meaning
Irish form: O Beirn
Meaning: 'descendant of Beirn' (from a Norse-derived personal name meaning bear)
Traditional stronghold: Roscommon
Pronunciation: oh-BURN; Irish O Beirn: oh BAYRN
History of the O'Beirne name
O'Beirne derives from O Beirn, built on a personal name thought to derive ultimately from the Norse Bjorn, meaning bear, which entered Gaelic usage through the same wave of Hiberno-Norse contact that gave Ireland several other Norse-derived personal names. The family were an important sept of County Roscommon, part of the wider Ui Briuin group of related dynasties in that region, holding lands around Tibohine and Castlereagh. O'Beirne survived as a recognisable landed family in Roscommon into the early modern period before, like most Gaelic lords, losing ground under the Cromwellian and later confiscations. The surname remains today most heavily concentrated in County Roscommon.
Variants: Byrne (unrelated, distinct) · Beirne
Related names from the same part of Ireland: Kelly · O'Connor · Murray · Brennan · Flynn · Flanagan · Kenny · Moran