I'm the only Type 1 in my family that I know of, diagnosed at age 27 (and misdiagnosed as Type 2 initially).
My brother is Type 2 on insulin. I have another brother who shows no signs yet but I worry about him because he needs to drop some weight with our family history.
My paternal grandmother was diagnosed Type 2 in her 50s but was put on insulin in her 70s. Neither of my parents have diabetes. I think there is some Type 2 a couple of generations removed on my mom's side too. I've always wondered about the genetics of how my parents escaped it - they are both in their 70s and get tested regularly.