The eldest of the four sons of John Stourton, the prominent Wiltshire landowner who was created Lord Stourton in 1448, William was named in memory of his grandfather, the Speaker of 1413 who had laid the foundations of the family’s aggrandisement. The date of his birth is uncertain, although at his father’s inquisition post mortem in 1463 he was said to be over 30, indicating that he was born at some point between 1422 and 1432,
These family estates qualified William, as yet un-tried in local administration, to represent Dorset in the Parliament summoned to meet at Bury St. Edmunds on 10 Feb. 1447, but the electors assembled at Dorchester on 30 Jan. were probably impressed more by the status of his father, who had recently been appointed treasurer of the King’s household, and if there was any local opposition to the young man’s return, it might have been easily overcome by the sheriff, who was his uncle William Carent*. Father and son had both attested the Wiltshire elections held on 10 Jan., so the latter was technically in breach of the statute which required both electors and elected to be resident in their counties on the date of the writs of summons.
Stourton’s father-in-law died on 6 Mar. 1450, and although the widowed Katherine Chideock was to retain a large part of her late husband’s estate as jointure and dower until her death 11 years later, on 18 May orders went out to the escheators of Somerset, Dorset, Wiltshire and Cambridgeshire to deliver to Stourton and his wife their already allotted portion of the Chideock acres, and to Margaret’s sister Katherine and her husband William Stafford* their share. The inheritance was to be divided equally between the two women.
Following his knighting, Stourton’s appointments to ad hoc commissions of local government in Dorset commenced, and from the following year he served as a member of the county bench. During the 1450s he seems to have followed his father’s example of loyal service to Henry VI and the avoidance of overt partisanship as factions among the lords led inexorably to civil war. On 16 Apr. 1455 William and his uncle Carent were the two men summoned from Dorset to attend the great council called to meet at Leicester on 21 May; while his father, as a regular counsellor to the King, would have been expected to join them there.
Nevertheless, at some point during the next eight months Stourton decided to throw in his lot with York, and may even have actively supported the duke’s followers at the battle of Northampton in July 1460. In a curious deed, allegedly sealed by one Richard Page of Warminster on 22 Aug., Stourton, together with his father and brother were linked together with Duke Richard and the victorious earls of March, Salisbury and Warwick as a feoffee of lands in Wiltshire.
Lord Stourton’s death on 25 Nov. left Sir William, his elder son and one of the executors of his will, as heir to substantial estates in nine counties,
For reasons which remain obscure, Stourton was not listed among the members of the nobility summoned to the Parliaments of 1463 and 1467,
Perhaps because he himself had held back from overtly supporting the Lancastrians, in Edward IV’s second reign Lord William was able to take on a more prominent position. The fall of some of their rivals for political hegemony in Wiltshire – the Hungerfords in particular – left the Stourtons virtually unchallenged in the region. Lord William came forward to act as an arbitrator in the long-running disputes between Richard Beauchamp, bishop of Salisbury, and the city of Salisbury in December 1471, when he and his fellows ‘emploied their effectual labours’ for a ‘good direction towardes a perfight end and unite’ between the parties.
Following his succession to the barony, Stourton had negotiated marriage alliances appropriate to his standing. A double match was arranged for two of his children, linking the Stourtons to the wealthy Berkeleys of Beverstone castle in Gloucestershire: before May 1467 his son and heir, John, was married to Katherine, daughter of Maurice Berkeley*, and Katherine’s brother William† (Berkeley’s own heir), married his new sister-in-law, Katherine Stourton.
Stourton died on 18 Feb. 1478. A few weeks earlier, on 7 Jan., no doubt aware that he was dying, he had made feoffments of certain of his estates, instructing the feoffees to make conveyances to his eldest son and the latter’s wife, and five days later he settled the manor of Dangeirs, Wiltshire, on a younger son, William, in tail. The late hour of these settlements was symptomatic of the general laxity he had shown with regard to the legal formalities governing the descent of his property. He had done nothing to regularize the status of certain manors which his father had put into the hands of trustees nearly 40 years earlier, in 1430, and all those so named had all since died, leaving the properties in the hands of Stourton’s cousin John Carent, as the son and heir of William Carent, one of their number. Nevertheless, despite their earlier confrontation over the former Fitzwaryn inheritance, Carent dutifully handed the manors over to the heir, Lord John, on 6 Mar.
