OFlannáin

OFlannáin is an Irish surname. It is an anglicized form of the Gaelic Ó Flaitheamháin, meaning "descendant of Flaithimhán". The personal name Flaithimhán itself derives from the Old Irish word "flaith", meaning "prince" or "lord". As with many Irish surnames, the OFlannáin clan originated in a specific region of Ireland, with historical records suggesting a strong connection to County Clare.

The OFlannáin sept was a significant Gaelic family in medieval Ireland, often associated with chieftains and landholders. Like many other Irish families, the surname underwent anglicization over centuries, leading to variations in spelling and the prefix "O" sometimes being dropped. Today, OFlannáin and its variations are found throughout Ireland and in diaspora communities worldwide, particularly in countries with significant Irish emigration such as the United States, Canada, Australia, and the United Kingdom. While the direct political power of the ancient septs has long since faded, the surname OFlannáin continues to be a part of Irish heritage and identity.