What is the English version of the Irish surname O Geibhchannaigh?

The English version of the Irish surname O Geibhchannaigh is "O'Gavan." This surname is derived from the Gaelic name meaning "descendant of Geibhchann," which is often associated with the Word for "gift." Surnames like O Geibhchannaigh reflect the patronymic naming tradition in Ireland, indicating lineage and ancestry.