Thomas Chippenham was

Archdeacon of York The Archdeacon of York (or of the West Riding) is a senior clergy position in an archdeaconry subdivision of the Church of England Diocese of York in the Province of York. It is named for the City of York and consists of the seven rural deanerie ...

from 1470 until 1478 when he became

Archdeacon of Totnes The Archdeacon of Totnes or Totton is the senior ecclesiastical officer in charge of one of the oldest archdeaconries in England. It is an administrative division of the Church of England Diocese of Exeter and under the oversight of the Bishop suf ...

.British History on-line
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References

Archdeacons of York Archdeacons of Totnes 15th-century English clergy {{York-archdeacon-stub