This is extremely interesting! My wife is a COUTURE.....now I'm very cuirious if there's a connection between your familly and hers! There don't seem to be any records that I've been able to find........her father is Armel J. Couture, born in Manchester, NH (now in FL) but his parents both died when he was young (he's almost 84 now) and I haven't found a "trail". The Gamelins are apparently connected to the Couture's (same tree???) through marriages.......small world!
If you have any more info on the Gamelins or the Couture's I would love to see it!
Again, thanks for getting in touch!