My male yorkie was neutered right around 1 yr old, and he doesn't mark in the house, he only pees on his puppy pads or outside if we take him out. Don't feel like you're taking a chance with a boy
They're the sweetest little things!!
My yorkie is a male, and like I said, he's always with me or my husband. Total lovebug! I think it depends on the specific dog. Stereotypes about males and females don't matter. Like everyone has said everyone's dog is different
You're going to love your little Princeton Roscoe so much that nothing else matters!!