- FondsSJCR - The Records of St John's College
- SubfondsSJAR - Administrative records
- Series1 - Master
- Set1 - Pre-18th Century Masters
- SubseriesClayton - Richard Clayton (1595)
- Sub-sub-series3 - Estates Correspondence: Richard Clayton
- File7 - Richard Potman (SJC Steward in Kent): Richard Clayton
- Item1 - Richard Potman (Clifford's Inn, London): Richard Clayton
- Item2 - Richard Potman (court rolls for Headcorn): Richard Clayton