what was his duty as archbishop of this place?
Conducted a survey of English Church, appointed various bishops, and initiated various reforms. He also intervened in the battle against the Mericans and restored peace between the parties involved.
Archbishop of Canterbury
Theodore conducted a survey of the English church, appointed various bishops to sees that had lain vacant for some time, and then called the Synod of Hertford (673) to institute reforms concerning the proper calculation of Easter, episcopal authority, itinerant monks, the regular convening of subsequent synods, marriage and prohibitions of consanguinity, and other matters.
He also proposed dividing the large diocese of Northumbria into smaller sections, a policy which brought him into conflict with Wilfrid, who had become Bishop of York in 664. Theodore deposed and expelled Wilfrid in 678, dividing his dioceses in the aftermath. The conflict with Wilfrid continued until its settlement in 686–687.

In 679 Aelfwine, the brother of King Ecgfrith of Northumbria, died in battle against the Mercians. Theodore's intervention prevented the escalation of the war and resulted in peace between the two kingdoms,
what is nach dir, herr, verlanget mich, bwv 150? An extant cantata or a piece of music . where is this music from? The original piece is lost and this survives in a copy made by C F Penzel. who composed this score? Bach. what is the history behind this score? On the basis of the text, it has been suggested that the work was written for a penitential service. what is the origin of this above mentioned service? It was developed by the  Irish abbots Cummean ,Columbanus and Archbishop of Canterbury, Theodore of Tarsus. where was the last mentioned person born? Tarsus in Cilicia. what was his early life like? He most likely studied at Antioch, and later was forced to leave his birthplace due to Muslim rule. He studied in Constantinopole and then travelled to Rome. He was consecrated archbishop of Canterbury in Rome on 688. .
He conducted surveys, appointed various bishios to sees, called the Synod of Hertford to institute reforms episcopal authority, itinerant monks etc Theodore conducted a survey of the English church, appointed various bishops to sees that had lain vacant for some time, and then called the Synod of Hertford (673) to institute reforms concerning the proper calculation of Easter, episcopal authority, itinerant monks, the regular convening of subsequent synods, marriage and prohibitions of consanguinity, and other matters. He has an important ecumenical and interfaith role, speaking on behalf of Anglicans in England and worldwide.
Theodore of Tarsus Theodore of Tarsus Archbishop of Canterbury
Archbishop of Canterbury Archbishop of Canterbury Present roles and status
conducted a survey Theodore conducted a survey of the English church, appointed various bishops to sees that had lain vacant for some time, and then called the Synod of Hertford (673) to institute reforms concerning the proper calculation of Easter, episcopal authority, itinerant monks, the regular convening of subsequent synods, marriage and prohibitions of consanguinity, and other matters.
He also proposed dividing the large diocese of Northumbria into smaller sections, a policy which brought him into conflict with Wilfrid, who had become Bishop of York in 664. Theodore deposed and expelled Wilfrid in 678, dividing his dioceses in the aftermath. The conflict with Wilfrid continued until its settlement in 686–687.
 n the last two of these functions, he has an important ecumenical and interfaith role, speaking on behalf of Anglicans in England and worldwide.
wiki:1172414
Theodore of Tarsus [SEP] Archbishop of Canterbury
Theodore conducted a survey of the English church, appointed various bishops to sees that had lain vacant for some time, and then called the Synod of Hertford (673) to institute reforms concerning the proper calculation of Easter, episcopal authority, itinerant monks, the regular convening of subsequent synods, marriage and prohibitions of consanguinity, and other matters. He also proposed dividing the large diocese of Northumbria into smaller sections, a policy which brought him into conflict with Wilfrid, who had become Bishop of York in 664. Theodore deposed and expelled Wilfrid in 678, dividing his dioceses in the aftermath. The conflict with Wilfrid continued until its settlement in 686–687.