The 15 surnames begin with GR

GRANDCLAUDE (1)
GRANDGERARD (1)
GRANDIDIER (1)
GRANDJEAN (2)
GRAPIN (5)
GRATTEPAUGE (1)
GRAVIER (2)
GRENOT (50)
GRIVEY (3)
GROLEAU (1)
GROSJEAN (3)
GROSLON GRESLIN (1)
GROSPIERRE (1)
GROSSARD (1)
GRUBER (1)