1) English manuscript 2) Medieval document of England 
A custumal is a medieval English document, usually edited and composed over time, that stipulates the economic, political, and social customs of a manor or town. == Manorial Custumals == The National Archives define custumal as `an early type of survey which consists of a list of the manor`s tenants with the customs under which each held his hou.....
a customary.