^^^^
The "relative" is not a relative—the reference is probably being made to the man whose wife is a first cousin of Vito Rizzuto's wife; or to this man's father-in-law, who is the uncle of Rizzuto's wife. You and anyone else should feel free to PM me for names and details.

The brothers are the Caputo twins, one of whom is implicated in the murder of Johnnie Raposo.