 Medieval life of Cockerham manor has been recorded in the "Custumal of the Manor of Cockerham", compiled in 1326–1327 and revised in 1463.The custumal, a record of rents and services owed by the tenants to their landlord, combines a local code of laws with an inventory of all resources of the land, from peat fuel, cattle and sheep to shoreline mussels.The tenants were forbidden to trade local fuel to the "strangers" who collected mussels on the shore.