Mine was Alessia Ottus in the temple district. I got the idea after reading that guide to the imperial city. I wont write a novel about it, just read the guide and it explains why i brained her with my mace and fed her husband to a daedroth. A while later i ran into another relative of hers, but i couldn't find his house so i nuked him with a fireball in public. Losing two levels of alteration in jail was worth it. Lucien was pleased.
post a reply and let me know which NPC should be murdered.