The Collaborative International Dictionary of English v.0.48:

Gallegan \Gal*le"gan\ (g[a^]l*l[=e]"gan), Gallego \Gal*le"go\
   (g[a^]l*l[=e]"g[-o] or g[.a]*ly[=a]"g[-o]), n. [Sp. Gallego.]
   A native or inhabitant of Galicia, in Spain; a Galician.
   [1913 Webster]