Céitinn
CÉITINN—XI—Keating, Keatinge; Norman 'de Ketyng,' i.e., of Ketyng, a place-name, possibly in England. I cannot find the spot. The Keatings were among the earliest of the Anglo-Norman invaders. They settled first in Wexford, where they obtained large grants of land, and afterwards spread into Carlow, Kildare, Tipperary, Waterford and Cork. Dr. Geoffrey Keating has made the name famous in Irish literary history.
Alphabetical Index to Irish Surnames