Killeen Family History
Killeen Name Meaning
Irish: Anglicized form of Gaelic Ó Cillín ‘descendant of Cillín’ a pet form of the personal name Ceallach (see Kelly ). The name was borne by various early Irish saints including the leader of a 7th-century mission to Franconia and Thuringia hence the popularity of the personal name Kilian in medieval central Europe.
Source: Dictionary of American Family Names 2nd edition, 2022