High Quality Content by WIKIPEDIA articles! Marcellus of Ancyra (died c. 374 C.E.) was one of the bishops present at the Councils of Ancyra and of Nicaea. He was a strong opponent of Arianism, but was accused of adopting the opposite extreme of modified Sabellianism. He was condemned by a council of his enemies and expelled from his see, though he was able to return there to live quietly with a small congregation in the last years of his life.