It seems also that Haughmond was intended to provide a chantry service at St John's Hospital in Oswestry, which was founded by Reiner, Bishop of St Asaph (1186-1224). In return it was to receive the manor of Wilcot. It is unclear whether this arrangement was ever implemented before Reiner also gave control over the hospital to the Knights Hospitaller. This led a series of legal proceedings involving Haughmond and the Hospitallers. Ultimately Haughmond agreed to hold the hospital of the Hospitallers for a payment of 20 shillings annually to their Preceptory at Halston.