There are some clues. Difficult to find. If you have the spell to talk to the dead, might help. As well, the books you can find in the villa are not exactly what you would expect from a paladin of tyr retinue.
No, no. Stick around those areas. But think a bit differently. Previous poster suggested a pretty direct course of action if you want more direction.

Ah - cool I might as well put that Amulet of Lost Voices to use now heh.