Last name Ó Briain (Ó Briain ) , all over the world, is a very rare surname. The last name Ó Briain is characteristic of Northern Europe, particularly Ireland, where it is a rare surname.
|liam ó briain Irish language expert and political activist (b. 1888)|
|donnchadh ó briain Irish politician, IE (b. 1897)|
|dara ó briain Irish comedian and television presenter, IE (b. 1972)|
|muircheartach mac toirdhelbaich ó briain king of Thomond|