Obrien is a surname of Irish origin, derived from the Gaelic name "Ó Briain." This name was originally borne by a clan that was founded by Brian Boru, who was a high king of Ireland in the 11th century. The name "Ó Briain" means "descendant of Brian," and it is believed to have been first used as a family name during the Middle Ages.
Over time, Obrien has become a popular surname throughout the world, with significant populations found in countries such as Ireland, England, Australia, and the United States. Although it is primarily used as a surname, Obrien has also become a given name for both boys and girls in recent years.
In terms of its meaning and history, Obrien carries a rich heritage that dates back centuries. It is associated with one of the most powerful and influential families in Irish history, and those who bear this name today can take pride in their connection to this illustrious lineage.
The name O'Brien experienced peaks in popularity during the late 1980s and early 1990s, with a total of 209 births recorded between 1921 and 2022.