Don't know other than my paternal grandmother.
Grandfather had a stroke in his 30's. I've only met him once.
Grandma passed this year in her 90's. I'm 50. She survived all 3 of her sons. I am the oldest of my dad's side.
Mom's side, grandfather in his 70's. I have no idea how old I was. Grandma passed a few years ago. I'm not good with the date thing, 5 or 6 years ago maybe.