Family name origins & meanings
- French : from the Old French word goi (Latin gubia) denoting a type of bill hook or knife used by vine-growers or coopers, hence possibly a metonymic occupational name for a maker or user of such implements.
- English (of Norman origin) : habitational name from any of various places in France named Gouy, for example in Aisne or Pas-de-Calais.
- Galician : probably a habitational name from Goy in Lugo province, Galicia.
- German : northwestern variant of Gau.