“You recognise me?”
Ryybyn and Lutz were raised in the same orphanage, and the convention is for orphans to be given a surname specific to the one they were raised in. So they are both Liebkind, though Ryybyn doesn’t use it anymore.
The Inquisition is something like state police for the Gold Dragon Empire, though they often act outside its borders to secure magic treasures and neutralise threats.