All my babes are in the post below. But right off the bat this is what I see.
Jack- has been around a long time and so they’ve def run into each other. He’s rooming with Kieran and while Nicolas never met his mom, she’s probably come up during stories (carnies love their stories). It’s no secret that Jack’s special and magical- his wings are now kinda a rumor (those who saw it know they came out). But he’s not really don’t anything to make them show in public since.
Reverend Conrad- boy going to mass? He’d know the Rev. def seen him around the cookhouse. He’s a sociable fellow.
Eva - oh the poor babe. She wants to make him feel better. (Run! Run away!!)
Kerr - He will def know Kerr. She’s newer (only about a year at the carnival) and works with the animals too (actually sleeps outside near the pens a lot). Sans a pc running the animal show we should decide what animals there are. It’s a carnival, not a circus so there wouldn’t be a ton, but enough. Kerr’s a bit secret and on guard (dun want folks finding out she’s a girl) but he would know she’s a criminal of some sort (most know she’s/he’s hiding in Zion).