Jon Matteson family tree headcanon, anyone?
Emma found out about each of Paul's relatives separately.
First Emma scratched someone's car, and while they were discussing what to do about it, Paul said, "If it comes down to it, I can get in contact with Gary." "Gary Goldstein? You're on a first name basis with the only lawyer in town?" "Yeah. He's my older brother."
A couple of weeks later, Emma's talking about the rare instances when she actually remembers something about the Beanie's customers, and she mentions a guy with really weird and greasy, anime-like hair. "Huh. I didn't know Richie liked Beanie's." "Who?" "Richie. My nephew. With the anime hair."
An ad for Camp Idontwannabang comes up on TV, and Emma recalls her horrible summer at Camp Idontwannabang as a teenager. Then Paul pulls out the, "I'm glad I never had to go. My cousin's one of the counselors — well, one of the directors now — so my parents decided I shouldn't have to spend an entire summer with him." "Boy Jerry's your fucking cousin?"
While on their way somewhere, they run into Daniel outside the Roller-rama. Emma's like, "God, I feel like I've seen that kid outside the Roller-rama ten times." "Yeah, Daniel goes there a lot." "Why the fuck do you know his name?" "He's my other nephew."
Finally, Paul brings Emma to a family gathering, where she spots the identical Lipschitz twins, who she's always assumed to be the same person when she's seen them separately. "There's TWO of them?" "Yeah, that's Trevor. My third nephew."
Skip forward another few weeks and there's something on the news about politics and so forth. "That secretary of defense looks a bit like you, Paul. What's he; another secret brother?" "No." "Yeah, I know, I'm just messing—" "Wallace is my cousin."

















