Pope Sergius I
The Roman army, being controlled by local aristocrats, entered papal politics in 686 by seizing the Basilica upon the death of Pope John V and evicting the clergy, violently forcing the consecration of Pope Conon and Pope Sergius I. The army also controlled the successive 2 elections, but with less overt violence. Pope Zachary in 741 was the last pope to announce his election to a Byzantine ruler or seek his approval.