Political event
Duke Konan I "the crooked" of the House of Roazhon
A claimant to the ducal throne, he assassinated the three previous claimants, supporting his claim at first with Blois, then the Duchy of Normaundie and the Cabal of Menez-Mikael. He finally ascended the throne, only to be killed by his brother-in-law, Fulk Nerra (Fulk III) of Anjou shortly into his reign.