Dawn and Carl
Carl likely hadn't mentioned Judith to Dawn, he didn't mention her to many people."She's almost two," he said. "Her name is Judith. She's my mom and Shane's daughter, but my dad was raising her as his own child." Judith considered Rick Grimes to be her father, and so did everyone else.
"I don't know if I've met Sheriff Stilinski's son. I may have spoken to him over the network, though." That was likely, even if he hadn't met Stiles in person.