I do now! The SN is windless omen and here are some preliminary brainstorms to start us off:
1. I'm thinking my Fortis will have been raised a military brat, but didn't really want to follow his parents' footstep and ended up falling wayward.
2i. Maybe the whole identity theft thing started with him trying to escape the path his parents set for him and ran into the lovely like-minded (or not at the time, up to you) Lorna, or, ii. He actually only met her a couple years back, possibly as an amnesiac who fell into the habit of stealing identities and accidentally killed someone in the process.
3. Did you think they might be romantically involved soul mates and/or married, or just very good platonic partners in crime? Maybe two sides of the same coin type of thing going?