Keenan
/ˈkiːnən/noun
A surname and given name of Irish origin.
Did you know?Keenan comes from an old Irish surname based on Ó Cianáin, meaning “descendant of Cianán,” and the root cian means “ancient” or “enduring.”
Etymological Timeline
Old Irish
OIr
Cian
““long-lived,” “ancient,” or “enduring””
Old Irish
OIr
Cianán
“a diminutive personal name, roughly “little Cian””
Medieval Irish
Gaelic
Ó Cianáin
““descendant of Cianán,” a hereditary surname”
14th-16th Century
Irish
Keenan
“Anglicized surname form used in English records”
Modern English
English
Keenan
“A surname and occasional given name”