Osferth was described as a relative in King Alfred's will and he attested charters in a high position until 934. A charter of King Edward's reign described him as the king's brother – mistakenly according to Keynes and Lapidge, and in the view of Janet Nelson he probably was an illegitimate son of King Alfred. Alfred died on 26 October 899 at the age of 50 or 51. How he died is unknown, although he suffered throughout his life with a painful and unpleasant illness. His biographer Asser gave a detailed description of Alfred's symptoms and this has allowed modern doctors to provide a possible diagnosis. It is thought that he had either Crohn's disease or haemorrhoids. His grandson King Eadred seems to have suffered from a similar illness. Alfred was buried temporarily in the Old Minster in Winchester. Four years after his death, he was moved to the New Minster (perhaps built especially to receive his body). The New Minster moved to Hyde in 1110 a little north of the city, and the monks were transferred to Hyde Abbey along with Alfred's body and those of his wife and children, which were presumably interred before the high altar. The abbey was dissolved in 1539 during the reign of Henry VIII and the church was demolished, leaving the graves intact. The royal graves and many others were rediscovered by chance in 1788 when a prison was being constructed by convicts on the site. Prisoners dug across the width of the altar area in order to dispose of rubble left at the dissolution. Coffins were stripped of lead, and bones were scattered and lost. The prison was demolished between 1846 and 1850. Further excavations were inconclusive in 1866 and 1897. In 1866, amateur antiquarian John Mellor claimed to have recovered a number of bones from the site which he said were those of Alfred. These came into the possession of the vicar of nearby St Bartholomew's Church who reburied them in an unmarked grave in the church graveyard. Excavations conducted by the Winchester Museums Service of the Hyde Abbey site in 1999 located a second pit dug in front of where the high altar would have been located, which was identified as probably dating to Mellor's 1866 excavation. The 1999 archeological excavation uncovered the foundations of the abbey buildings and some bones, suggested at the time to be those of Alfred; they proved instead to belong to an elderly woman. In March 2013, the Diocese of Winchester exhumed the bones from the unmarked grave at St Bartholomew's and placed them in secure storage.