So Evan adores Prim BUT I don't think he's very impressed that he now isn't the baby of the family, haha. He has also automatically presumed that he is now down to the 4th favourite child, because Evan is awkward ;)
As for the rest of my army of men, idk if any of them would know Prim. Higgs definitely wouldn't, because he knows like 2 people. Oliver won't know who she is because she doesn't play Quidditch. And Zac... well, I think luckily for Prim, Zac wants in Daisy's pants too much to be outright mean to Prim, he's mean but not stupid ;)