Wow, my mom is ¼ Cherokee. That makes me the same as your grand dad. Darned if I know where my curly hair came from.

Oops, my math skills are falling by the wayside. My kid would be the same as your granddad.
No, come to think of it, that wouldn't be right either because my wife is part Cherokee, too. There are a LOT of Cherokee people still in Tennessee.
A couple of weeks ago, I posted this pic on the Benroy thread. This is my mom in 1957. She looks Indian here:
But here's a pic of me and my very NON indian curls:

I am NOT a complete idiot! Some of the pieces are missing.