please help me with this

So in my Fiancés family all the boys have the Intials G.E.T. For a very long time all of them were named George. Lucky for me my fiancés Mom broke that cycle and chose Gabriel because of this I can pick any boy name as long as it start with a (G.) But I'm having the hardest possible time. Our last name ends in (SON) so most boy names I'm fond of like Greyson don't sound good with our last name. So If you ladies could help me come up with some unique (G) names it would really really help me out.