2nd-century Bishop of Ravenna
Adheritus was Bishop of Ravenna during the 2nd century and successor to Saint Apollinaris, the first bishop of Ravenna. He was of Greek origin and was a follower of Apollinaris Adheritus died on 27 September at the port of Classe, and his remains are venerated in the Basilica of Sant'Apollinare in Classe near Ravenna, Italy.