Margaret is one of Hero's companions; she's with Borachio, whose name means "drunkard". A survey of cocktail-inspired baby names rendered "Jack", which previously-Ben grabbed with both hands and started shrugging into like a very comfortable trenchcoat. I'm not going to argue with that.

I don't like Beatrice's actual boyfriend very much, which I think is one of the low points. Really, Jack and Margaret are the dynamic banter pair.