I was blessed with zero, though it get's a bit lonely sometimes.
I guess I could count my half brothers, but I've never seen them before and they're around 11 years older than me, so maybe not. I will count the fact that I have three nephews though.
I have two half brothers and one half sister, all of them heaps older than me, older than most people here on Tamatalk. I've not seen much of them though. :S