The abbey's modest but sufficient wealth was threatened, before many of the grants were confirmed by royal charter, when Earl Roger's son, Robert of Bellême, revolted against Henry I in 1102. The king exiled and expropriated his unruly vassal and the patronage of the abbey escheated to the Crown. This deprived the abbey of powerful local protection and gave the descendants and successors of donors an opportunity to wriggle out of their obligations. For example, Siward had given up any claims he might have to the abbey site in return for a life-time grant from Earl Roger of the estate of "Langafeld", now Cheney Longville, which would pass to the abbey on his death. Siward's son, Aldred, refused to surrender the estate to the abbey until Abbot Fulchred gave him £15. This arrangement was engineered by Richard de Belmeis I, later Bishop of London, whom the king had sent to exercise viceregal powers in Shropshire after Earl Robert's expropriation. However, Richard was not to be trusted. On his death bed in 1127 he admitted to his confessors that he had lied about his tenure of Betton in Berrington, which really belonged to Shrewsbury Abbey – probably a grant from Robert de Limesey, then Bishop of Chester His confessor tried to clear up the matter by stating the facts to the interested parties. Although Richard had directed that the estate be restored to Shrewsbury Abbey, its status was contested by his lay successors for decades. In 1127 Philip de Belmeis sued for the estate, although he quickly defaulted. His younger son, Ranulph, tried again a few decades later, but gave up in return for acceptance into the abbey's lay fraternity. As late as 1212 Roger de la Zouche launched a fresh suit, in which he persisted for years, unsuccessfully. These were only examples of a morass of complex litigation into which the abbey was drawn.