Theodore was the Syriac Orthodox patriarch of Antioch whose term began between 649 and 651 and ended with his death between 664 and 667.
According to Bar Hebraeus, Theodore was a monk in the desert of Skete in Egypt who later moved to the monastery of Qenneshre in Syria.
[3] The vita of Theodotus of Amida relates that, when the young Theodotus, a monk of Qenneshre, was preparing to leave the monastery, Theodore convinced him to prolong his stay for one year because he foresaw that his own death was approaching.
[3] Theodotus remained in Qenneshre until Theodore's death, and attended the patriarch's funeral before making a pilgrimage to the Holy Land and Egypt.
[3] The vita also attests that the patriarch was mourned by Christians and Muslims alike.