Name
I didn't say it needs to have sense. I know what deathwish means and the idea is that OTHERS call him that and he would prefer deathbane, but that needs to be earned.
He was trained in temple of good god full of priests who could turn and destroy undead. He is brooding, reckless and unfriendly. Ergo, there would be some snide remarks targeted at him. Also, he is duskblade, he wouldn't fit either with temple guards, sorcerers or priests.
In his desire to prove himself he will do some reckless things, but he managed to stay alive up until this point.