A fifteenth-century Oxfordshire and Berkshire landowner, knight, sheriff and Member of Parliament. He was associated with Besselsleigh and Ackhampstead and was noted for charitable bequests and gifts to religious and civic institutions. His will directed that his lands be sold for alms.

The exact date of death is given variously as 1424 or 1425 in secondary materials; this record follows the Ackhampstead account's 1425 date.

Research sources:
- Lewknor Manors historical account, which dates the first explicit record of Ackhampstead Manor to 1412 and describes Sir Peter Bessels's trust arrangement and 1425 death; see also the underlying medieval estate discussion in the Ackhampstead history. — https://astonrowant.wordpress.com/lewknor-manors/