Pope Martin I

Pope Martin I was pope from 649 to 653, succeeding Pope Theodore I in July 649. The only pope during the Byzantine Papacy whose election was not approved by an iussio from Constantinople, Martin I was a critic of Monothelites, and condemned their leaders in writing. He incurred the wrath of Constans II], who ordered Martin kidnapped and brought to Constantinople. Martin was imprisoned for a time, and then exiled to Kherson in present-day Ukraine, where he died in 655.

He was canonized for his suffering.

Pope Martin I in Justinian
Justinian II described his grandfather's seizure and exile of Pope Martin I. Justinian was also exiled to Kherson in life. He concluded that Constans II must have been a hard man.

Justinian attempted to follow in his grandfather's footsteps when he demdanded the seizure of Sergios I. His efforts were unsuccessful.