Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
BYRNE
As described in historical dictionaries
Patronymica Britannica (1860)
BYRNE. In vScotland, a topographical exjircssion, impljing the high part of a farm where young sheep are summered — or dry heathy pasture forweanlings. Celt, ln'ijn, a hill. Jamieson. The Irish family of O'Byrne claim from Hermon, the youngest son of Milesius. B.L.G.
Origin: Celtic
Region of origin: British Isles
Country of origin: Ireland
Religion of origin: Christian
Language of origin: Gaelic