I tried to do a bit of searching around- not easy when almost everyone has the same name! ;)I can try to narrow it down at least.

William-Craige-Holm is my Great(x4) grandfather. His father was Thomas Coffin, so you can probably knock that name off.

I did find a list of some of the sons of John Coffin and Isabella Child, so here's hoping that could possibly help.

http://www.familyorigins.com/users/s/t/g/Bob--Stgelais/FAMO1...

I hope that helps!