Earl Roger and his associates added several estates and other sources of income to Shrewsbury Abbey's endowment, which had been valued at £46 18s.
in 1086, before the first abbot was appointed.
As well as rural manors, the abbey had urban property, mills, and the tithes and advowsons of many churches.
However, Orderic, a shrewd observer, tells us that Roger only "moderately endowed with lands and rents" (terris ac redditibus mediocriter locupletavit).
Moreover, there was a long wait ahead before some of the endowments were to materialise.

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.

However, Henry I himself seems to have been supportive of Shrewsbury Abbey, especially when in the vicinity.
He confirmed Robert's gift of land Baschurch to Fulchred, perhaps while actually campaigning against Robert in Shropshire and Staffordshire.
He also took Fulchred's side in a variety of disputes with officials of the royal forests in Shropshire and reminded local officials and barons that the abbey was exempt from all customs, as in the time of Earl Roger.

After this initial support, however, there was a long delay before the king took further action on the monastery's behalf.
It is unclear when Abbot Fulchred died, but it was certainly some years before 1121, when Henry at last came to the support of Godfrey, the second abbot, with a series of charters.
Some of these, at least, were issued within Shropshire: at Bridgnorth, Condover and Shrewsbury itself.
These included a general statement of principle that the new abbot was to enjoy the same estates and privileges as his predecessor.
Note was taken that the abbey had exchanged Henry de Say's manor of Brompton, south of Shrewsbury, for Siward's former estate of Cheney Longville in an attempt to improve management and economise by concentrating resources.
Two documents announced and confirmed Henry's own valuable gift of multure or mill-right to the abbey within Shrewsbury.
As the monks were to receive the miller's fee for all grain ground in the town, they had a monopoly over milling and no one else was allowed to grind corn without their permission.
As it was related to the water power of the Severn and its tributaries, the king attached to the grant a monopoly over fisheries at both of the town's bridges.
The ne
Earl Roger and his associates added several estates and other sources of income to Shrewsbury Abbey's endowment, which had been valued at £46 18s. in 1086, before the first abbot was appointed. As well as rural manors, the abbey had urban property, mills, and the tithes and advowsons of many churches. However, Orderic, a shrewd observer, tells us that Roger only "moderately endowed with lands and rents" (terris ac redditibus mediocriter locupletavit). Moreover, there was a long wait ahead before some of the endowments were to materialise.
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.
However, Henry I himself seems to have been supportive of Shrewsbury Abbey, especially when in the vicinity. He confirmed Robert's gift of land Baschurch to Fulchred, perhaps while actually campaigning against Robert in Shropshire and Staffordshire. He also took Fulchred's side in a variety of disputes with officials of the royal forests in Shropshire and reminded local officials and barons that the abbey was exempt from all customs, as in the time of Earl Roger.
After this initial support, however, there was a long delay before the king took further action on the monastery's behalf. It is unclear when Abbot Fulchred died, but it was certainly some years before 1121, when Henry at last came to the support of Godfrey, the second abbot, with a series of charters. Some of these, at least, were issued within Shropshire: at Bridgnorth, Condover and Shrewsbury itself. These included a general statement of principle that the new abbot was to enjoy the same estates and privileges as his predecessor. Note was taken that the abbey had exchanged Henry de Say's manor of Brompton, south of Shrewsbury, for Siward's former estate of Cheney Longville in an attempt to improve management and economise by concentrating resources. Two documents announced and confirmed Henry's own valuable gift of multure or mill-right to the abbey within Shrewsbury. As the monks were to receive the miller's fee for all grain ground in the town, they had a monopoly over milling and no one else was allowed to grind corn without their permission. As it was related to the water power of the Severn and its tributaries, the king attached to the grant a monopoly over fisheries at both of the town's bridges. The ne
Shrewsbury Abbey