Killen Family History
Killen Name Meaning
Irish (Down and Antrim): Anglicized form of Gaelic Mac Coilín ‘son of Colin’. According to MacLysaght the name was that of a gallowglass family from Scotland taken to Ireland by the O'Donnells. Irish (Down and Antrim): variant of Killeen . German: patronymic from Kill .
Source: Dictionary of American Family Names 2nd edition, 2022