Dad's dad was Grandad. He was a hard working fellow from New Mexico, built his own insurance business from the ground up, very concerned about always maintaining a good image in the community. I learned from him what it means to be a proper gentleman... but we butted heads a lot. He offered to pay me to cut my hair when I was in college b/c he was determined I'd never "make anything of myself looking like a hippie."
Mom's dad was the classic old-school West TN good ol' boy, PawPaw. Definitely also a southern gentlemen when it mattered, but he was the kind of guy who would go fishing before work, loved duck hunting, and smoked cigars, but knew how to treat a lady well. He named my mom after himself, forcing her to grow up w/ the name Charlie, just to prove a point to a friend who bet he wouldn't do it. lol. Unfortunately PawPaw passed away when I was 12, I wish I'd had more days w/ him, I constantly hear how much I'm like him and my uncle.
Either way, grandfathers a special. Best of luck.