- FondsSJCR - The Records of St John's College
- SubfondsSJES - Estates
- Series2 - Estates and manors
- Subseries14/BTY - Burythorpe, Kennythorpe, and Leavening, Yorkshire
- Sub-sub-series4 - Birdsall, Yorkshire: will and deeds
- Item1 - Will: Wacelin [Wasselyn]
- File2 - Deeds: Birdsall