I don't have anyone related to me with autism, but I do know someone with it. Well, two people, actually. There were two twin girls in my elementary school who had autism. (I just want to note here that my elementary school is extremely autism friendly. It's the school most autistic kids in the area attend, because we had a whole program just for autistic kids and have staff that know a lot about it.) Although some kids at school couldn't really interact with everyday classes, a lot of kids went to normal classes with a helper – a grownup who was sort of like their parent/teacher at school. Anyway….in a lot of homerooms, the autistic kids were assigned a "buddy" that rotated every week. The buddy would sit with them at lunch, walk with them in line, sit next to them, and help them out if they needed something. In second grade, I became the buddy of one of the autistic twins, whom I'll call Stacey. I liked it so much that I became Stacey's permanent buddy throughout the whole year. Although communicating with her was different than communicating with my other peers, she became one of my best friends. She came to my birthday party, I visited her house, and I sat next to her in class every year. I remained friendly with her and her helpers throughout the years, and did an article on autism for the school newspaper in fifth grade. Stacey and her twin don't go to my middle school, but thanks to her, I understand a lot more about autism that I wouldn't know if I hadn't been her buddy that one year. 

No, because we went to different schools, and I never got her phone number……:(

I don't have any siblings with autism, but there's this boy at Kake and my's school  who has autism. We sit with him at lunch every day and he is really nice and fun to be around. Thank you for starting this thread, it's a really great one!