Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GALLOWAY
As described in historical dictionaries
Patronymica Britannica (1860)
GALLOWAY. An extensive district forming the S.W. corner of Scotland. The surname is written in the H.R., Galaway and Galewey.
Surname type: Location or geographical feature
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic