As described in historical dictionaries

Patronymica Britannica (1860)

KEELTY. KIELTY. From the ancient personal name Caoilte, borne by one of the heroes of Ossiau. Ulster. Journ. of Archajol. No. 2.

Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.


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