I've really been liking
Peter a lot more lately. Like to the point where I'd consider using it. I think it's a nice strong name, but it's gentle and kind and friendly at the same time. I want to give it a hug.
Peter and
Madeline are amazing together!
Madeline is pretty, but I'd stay away from it too if you have two relatives already with that name.
Magdalene is a really similar name (well, technically the same name!), and it's very nice too. You don't see it around nearly enough. I know you dislike
Maggie though, and your nickname options are more limited with
Magdalene than with
Margaret. I think
Magdalene fits better with
Peter, although I'd never dissuade anyone from considering
Margaret!
I'm not keen on either of those
Jacob combos, but I think
Jacob Leonard is nicer looking.