OCahan

OCahan refers to a surname of Irish origin. It is an anglicized form of the Gaelic Ó Catháin, meaning "descendant of Cathán." The personal name Cathán itself is derived from "cath," meaning "battle" or "war." Therefore, the surname signifies a lineage tied to a warrior or a fighter.

Historically, the Ó Catháin sept was a prominent Gaelic clan in Ireland, particularly associated with the province of Ulster. They held significant territory and influence in what is now County Londonderry and County Tyrone. Like many Irish septs, their fortunes fluctuated over centuries due to political and social changes.

The surname is still common in Ireland and has spread to other English-speaking countries through emigration, particularly to the United States, Canada, Australia, and the United Kingdom. Variations in spelling may exist due to historical transcription practices and regional dialects. Individuals bearing the OCahan surname can trace their ancestry back to this ancient Irish lineage.