The Icelandic Sagas/YMMV

Magnificent Bastard: Loads, but Egill of Egils Saga stands out. He grows into the sort of nasty old man who planned to throw silver coins into the crowd at the summer assembly just to hear^[1] the people break out fighting, then later buried his two chests of silver, given to him by King Athelstan just to keep anyone else from getting it. And he, of course, killed the slaves who assisted him, at least the saga states that nothing was ever heard of either the silver nor the slaves.
- Hallgerðr from Njáls Saga probably counts as a Magnificent Bitch.
Values Dissonance: For a modern reader, frequently.