There usually is, don't worry. It's one of the highlights of meeting familiar-strangers, you still learn new things.
We are, but we aren't. Torunn is my daughter, but not by birth. Thor left her with the Avengers when she was an infant, and Tony and I decide to be the ones to raise her. James is like a nephew to me. In our timeline, the original Avengers retired, as much as any of them ever could, and the Avengers Mansion was communal housing (like the Tower and compound in your timeline), so many of the Avengers became even closer as family - which is why I said we are and we aren't.