The first diocese of Lindisfarne was merged into the Diocese of York in 664.
York diocese was then divided in 678 by Theodore of Tarsus, forming a bishopric for the country between the Rivers Aln and Tees, with a seat at Hexham and/or Lindisfarne.
This gradually and erratically merged back into the bishopric of Lindisfarne.
Eleven bishops of Hexham followed St. Eata, of which six were saints.

No successor was appointed in 821, the condition of the country being too unsettled.
A period of disorder followed the Danish devastations, after which Hexham monastery was reconstituted in 1113 as a priory of Austin Canons, which flourished until its dissolution under Henry VIII.
Meantime the bishopric had been merged in that of Lindisfarne, which latter see was removed to Chester-le-Street in 883, and thence to Durham in 995.
The first diocese of Lindisfarne was merged into the Diocese of York in 664. York diocese was then divided in 678 by Theodore of Tarsus, forming a bishopric for the country between the Rivers Aln and Tees, with a seat at Hexham and/or Lindisfarne. This gradually and erratically merged back into the bishopric of Lindisfarne. Eleven bishops of Hexham followed St. Eata, of which six were saints.
No successor was appointed in 821, the condition of the country being too unsettled. A period of disorder followed the Danish devastations, after which Hexham monastery was reconstituted in 1113 as a priory of Austin Canons, which flourished until its dissolution under Henry VIII. Meantime the bishopric had been merged in that of Lindisfarne, which latter see was removed to Chester-le-Street in 883, and thence to Durham in 995.
Hexham Abbey