Ó Caomhanaigh is an Irish surname that translates to "descendant of Caomhán," with "Caomhán" meaning "little saint" in Gaelic. This name is associated with various families in Ireland, particularly in the provinces of Connacht and Munster. The Ó Caomhanaigh family has historical ties to the Gaelic nobility and has been documented in Irish annals. Members of this family have contributed to Irish culture, including literature and music, and have played roles in local governance throughout history.