Mafia 19. Trojan War.

Old Norse is, I think, a clue to Vegtam. Modern Icelandic is very similar to Old Norse. Icelanders can actually read Old Norse manuscripts. Moreover, he was probably going to avenge her, perhaps to deflect suspicion from himself...
Hmm, well, he can do that by voting against himself...
Execute Vegtam.

Added 1 minute ago
And, judging by the description, he is a priest of Ares.