Like other members of his family, Gilbert entered royal service. In 1215 King John granted him the manor of Sutton, Surrey. He was made Constable of Devizes Castle in 1229. The following year he took part in an English military expedition to Brittany and Poitou. In 1231 he was entrusted with the custody of St Briavels Castle and the Forest of Dean, and he received various other grants. In 1232, following his father's death, he inherited Basset family properties, adding to properties which had been held by his brother Basset-238, who had died in 1230.
In 1232 Peter des Roches came into a position of power in the royal government, and Gilbert suffered a series of setbacks. He was deprived of offices he held, a claim to one manor he held was arbitrarily decided by Henry III against him, and in 1233 his remaining estates were confiscated and an order was issued for his arrest. Gilbert was by now in open rebellion, along with his brothers Philip and Warin, a cousin, and Richard Marshal, Earl of Pembroke who was his overlord. In 1234, after the Earl of Pembroke's death, he was back in royal favour; estates were restored, he received a series of royal gifts, and he was a witness to a number of royal charters. In 1237 he was supportive of Henry III when the king requested a grant of revenues from a tax of a thirtieth on moveable property. The extent to which he stood in royal favour can be seen by a personal gift by Henry III in 1241, shortly before Gilbert died, of 25 deer for Gilbert's park at Wootton Bassett, Wiltshire.
In 1236 he participated in a major tournament, which degenerated into real fighting.
Gilbert married Isabel de Ferrers, a relative of the Marshal family with which he and other members of his family were closely linked. They had a son who died, still an infant, within weeks of his father, on 22 August 1241.
Gilbert died in a hunting accident in 1241. The chronicler Matthew Paris states that his horse fell over a tree trunk, and that Gilbert "broke his bones and so shocked his nerves" that he died of his injuries a few days later. He was buried at Bicester, Oxfordshire, in an Augustinian Priory of which the Bassets were major benefactors.
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On 8 Aug 2019 at 14:01 GMT Michael Cayley wrote:
On 1 Aug 2019 at 13:46 GMT Michael Cayley wrote: