LotusEater
I brake for blue butterflies
Can you kill anyone to get the Ebony Mail?
As far as I know, any follower. However I've never experimented with essential NPC's but I assume there are exceptions.
With my previous character, I tried a Dark Brotherhood initiate, and she wasn't for it. So I had to cut her loose and find someone else. I think I used the Riften housecarl.
Oh bummer. I didn't even realize followers could refuse. Wonder if I could get a Companion to go for it. I plan to slaughter them all anyway.