PRN 46092 The name Covenham comes from an Old English name 'Cofa' and 'ham'. In the Domesday Book and the Lindsey Survey Covenham was returned without distinction between Covenham St Bartholomew and Covenham St Mary. In the Domesday Book, a manor belonging to the Bishop of Durham is recorded, and this entry also records the presence of a church and salt pans. Three manors with five salt pans are recorded as belonging to William de Perci, and land later belonging to Alan de Perci is recorded in the Lindsey Survey. The names appear in their full modern form in the thirteenth century, and it may be then the settlements began to be identified as separate settlements. {1}{2} In 1563 there were 39 households in the parish. {3} In the early 18th century there was 20 to 24 families, and it was called Conham St Mary at this date. {4} The population was 114 in 1801 rising to a peak of 196 in 1861 and falling again to 96 in 1901. {5} Medieval earthwork tofts (PRN 46092a, b, c) (TF3419 9404, TF 3403 9414, TF 3418 9424) and medieval cropmark enclosure (PRN 46092d) (TF 3381 9431) were observed on aerial photographs as part of the National Mapping Programme. {6}