Possibly one of the ladies, but we'd have to choose someone to knock off and I can't think of who! Maybe Segundus? I can't decide. Also, Childermass must know how to fight.

Would this be set in the midst of the book or before/instead of those events? I actually kind of like the latter. Nobody knows each other yet, except Jonathan and Arabella and Norrell and Childermass. Emma is still very sick and dying because her stupid mother won't call a doctor (rage) and they have to help her. (I feel like under these circumstances she and Norrell would really bond; in the book when Norrell first meets her he seems to really identify with her, having been frequently ill himself.)

I just remembered the sensates are supposed to all be born on the same day, which is impossible here, but let's ignore that. Because: magic.