Did you know that O'Brien is one of the most popular Irish names?
The surname O'Brien is 'O'Briain' in Irish, meaning descendant of Brian (Boru). The name means 'exalted one' or 'eminence'. It is among the ten most frequently found in Ireland and derives from the 10th century King of Ireland, Brian Boru.
Kiss Me I'm An O'Brien - Short Sleeve Irish T-Shirt By Two Thirds Irish