As described in historical dictionaries

Patronymica Britannica (1860)

DONELAN. One of the most ancient families in Ireland, deriving from Cahal, 2nd son of Morough Molathan, King of Connaught, who died A.D. 701. One of his descendants built the castle of BallyDonelan, co. Galway. B.L.G.

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


Origin: Celtic

Region of origin: British Isles

Country of origin: Ireland

Religion of origin: Christian

Language of origin: Gaelic

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