The card tray has the following 15 family names with the initial G.

Gaag, van der (8)
Galema (3)
Galen, van
Gebing (10)
Gerritsma (3)
Ghijsen
Gielstra
Giesselbach
Glaudemans (5)
Goossens (2)
Graaff, de
Gronsveld
Gros
Grotenboer
Guikema