There is a theory about who russ might actually be. Remember from season 5, the episode "Marco Polo" with Carmella's father's birthday party? He had an old friend from his Navy days come to the party, the stuck up doctor who insulted the Beretta shotgun Tony gave to Hugh as a gift. His name, RUSS Fegoli and during the episode Hugh was telling a story how back in their navy days, Russ slept around a lot. And we all know Paulie's real mother said she was impregnated by a "soldier". Granted, they are seamen in the navy but most civilians will confuse marines, soldiers, seamen and airmen anyways. Just a theory I've read on other forums