Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
GOW
As described in historical dictionaries
Patronymica Britannica (1860)
GOW. Gael. A smith. GOWAN. Scotch, a 'Daisy,' which is also (but wdiy, it is difiicult to guess) an English surname.
Surname type: From given name or forename
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic