OBrislain

OBrislain is a surname of Irish origin. It is an anglicized form of the Gaelic Ó Brisleáin, meaning "descendant of Brisleán." The personal name Brisleán itself is believed to derive from the word "bris," meaning "to break" or "to shatter." Historically, the O'Brislain sept was associated with the province of Munster in Ireland, particularly in areas that are now counties Cork and Limerick.

Like many Irish surnames, O'Brislain faced anglicization over centuries, leading to variations in spelling. While O'Brislain is the most direct transliteration, other forms such as Breslin, O'Breslin, and Bresland have also emerged. The distribution of the name across Ireland and internationally reflects historical patterns of migration and settlement. Individuals bearing the O'Brislain surname, or its variants, can be found in Ireland today, as well as in countries with significant Irish diaspora populations, such as the United States, Canada, Australia, and the United Kingdom. Information on prominent historical figures with this specific surname is limited, but the name signifies a lineage connected to the ancient Gaelic culture of Ireland.