Fulco of Lisors, also rendered Fulk de Lizours or de Lisors, was the named subtenant of Roger de Bully’s larger Domesday holding at Adwick.

The later descent from the de Lisors interest into the FitzWilliam family is reported in secondary local histories but is not entered here as a precisely dated conveyance.

Research sources:
- Domesday Book entry for Adwick [le Street], Land of Roger of Bully; Open Domesday, Phillimore reference Yorkshire 10W39. — https://opendomesday.org/place/SE5408/adwick-le-street/