User blog comment:Darkcloud1111/It's All Connected/@comment-4210892-20111011213527/@comment-3146930-20111011215142

Nope, but because they share the last name and look very much alike, I think they are related on some level (Great uncle, great grandfather, a distant cousin). Even if they arent related, the fact that Leo looks almost exactly like Sammy with close personalities in a way connects them