King's College, Cambridge keeps an extensive number of records relating to St James Priory. Its records include 14 boxes of data, covering from 1122-1950.
Examples of records include:The original grant to King's College
Court rolls
Rentals
Manorial accounts
Receipts
Court extracts
Title deeds
Valuations
Maps and plans
Estate administration
Estate correspondence
Accounts
Legal papers
More information and the full catalog of records is available at this link.