The Domesday Book lists the settlement name as "Hostewic" and "Ostewic", under the manors and lords of Kilnsea and Hilston, and in the Hundred of Holderness.In 1086 lordship was transferred to Drogo of la BeuvriËre, who also became Tenant-in-chief to King William I. Domesday records that in Edward the Confessor's time the combined manor of Hilston with parts of Owstwick was valued at fifty-five shillings.Owstwick's yearly saving on poor-relief costs by being part of the Union system was estimated at the time as £1,000, this being similar for all parishes contributing.Monthly meetings, previously based on larger areas, were broken down into smaller units, one being Owstwick, as part of a formalised pyramidic restructure.The name reappears in records in 1349, during the reign of Edward III, with a Robert Owst who had possessions in Hedon, and whose descendant branches "have lived in Holderness for centuries", and held lands in Nunkeeling, Welwick and Halsham.In The History and Antiquities of the Seigniory of Holderness, Poulson quotes a 1745 certificate given to Thomas Owst, which describes him as a popish recusant, by Act of Parliament unable to travel farther than five miles from place of abode.The certificate signed by the Deputy Lieutenant was a licence allowing him to travel to Drax to visit his ill wife, under conditions including a stipulated return date.