Vithimiris From Wikipedia, the free encyclopedia Vithimiris was a king of the Greuthungi, ruling for some unspecified time in the area of present-day southern Ukraine. He succeeded to Ermanaric, meaning that he probably reigned in 376. Ammianus Marcellinus, the only known source on him, states that after Ermanaric's death he tried to resist the Alani, who were allied with the Huns, with the help..