You might try to trace your father's family back to wherever. That's the only way you'll find out for sure who you're related to. By the way, I've been researching the Crabb family for over 30 years, and so far, they ALL trace back to the UK. I'll be glad to help you if I can. Just get as much info on your family as you can, then go for census records. They will tell you where that branch of your family is from, then you can trace THEM back from there. I think everyone with the name Crabb was told at one point that they were related to Buster, the actor, Buster, the English soldier, or George, the poet.