From a new family in landed terms, Cotton was the eldest of three sons of Walter Cotton. Walter was a wealthy London mercer who acquired the manor of Landwade, previously held by other Londoners, with his brother Thomas in the early 1420s. In 1436, the Crown valued Walter’s income from lands in Cambridgeshire and elsewhere at £66 p.a. for the purposes of taxation.
Later a regular member of the quorum as a j.p., William may well have had a legal training as a young man. If he did have a background in the law, this would no doubt have made him a useful recruit to the royal bureaucracy, which he had joined as a clerk of the great wardrobe by the later 1420s. He remained with the wardrobe, in which he was at various times also a yeoman, collector of rents and ‘provisor’ of repairs,
The background of Cotton’s first wife, Anne, is unknown but his second was Alice, one of the daughters and coheirs of John Abbot, a mercer and no doubt an acquaintance of his father. It appears that he gained no land through his second marriage, for in his will of 1444 Abbot gave him and Alice merely a reversionary interest in his property in London and Northamptonshire, which he left to his other daughter Elizabeth, the wife of Walter Mauncell.
Among the feoffees of the Exning settlement were two important figures, Sir William Phelip†, chamberlain of the Household, and William Alnwick, bishop of Norwich. Cotton acted in return for Phelip, by then Lord Bardolf and perhaps his patron, standing surety when the latter received the keeping of estates in Cambridgeshire belonging to the honour of Richmond from the Crown in November 1437.
It was also in the late 1430s that Cotton first became involved in the administration of Cambridgeshire. In March 1439 he joined the commission of the peace and in the following November he was elected as one of the knights of the shire for the county. The election occurred in the aftermath of great controversy and he and his fellow knight, William Allington II*, were not elected until 19 Nov., after Parliament had opened. A previous attempt to hold an election had failed because the then sheriff, Gilbert Hore*, a partisan of the most powerful local magnate, John, Lord Tiptoft†, withdrew from the shire court rather than return Cotton and Allington, the candidates backed by the young Sir James Butler or Ormond (later earl of Wiltshire), who was actively seeking to establish himself in the region. A private, and highly biased, report sent to Cardinal Beaufort sets out Tiptoft’s version for the aborting of the original election. It alleged that:
...iij wekys continualy be fore the said eleccion Laurence Cheyne[*], William Alyngton and William Cotton, with mony oder of Sir James Ormond his men, rydden and sent abowtyn to the commones of the shyre of Cambrigge, chargyng them to gyf her voces atte the eleccion of the knyghtes of the shire to suche men as they wold have, manasyng theym yef they did the contrary to be bete and sleyn whare they myght be takyn.
The report went on to accuse Ormond’s supporters and Sir Robert Cromwell, the cousin of Ralph, Lord Cromwell, of riding into Cambridge at the head of 50 armed men on the eve of the election and occupying all the inns in the streets leading up to the castle (the meeting place for the shire court). It added that the sheriff had departed from the castle on election day after Ormond and Cromwell – non resident in the shire when the writ for the election was issued and therefore disqualified from voting – had refused to do so themselves. Cotton may have supported Ormond out of loyalty to Lord Bardolf. The latter had his own causes for grievance against Tiptoft, to whom he had lost the keeping of the honour of Richmond estates in Cambridgeshire, just weeks after his own grant of November 1437. In 1440, Ormond, probably Bardolf’s appointee as steward or sub-lessee of these estates, complained that Tiptoft had assaulted and distrained him in connexion with them. As it happened, Tiptoft had likewise lost a farm from the Crown to Cotton and his friend Henry Filongley* (also one of Ormond’s closest associates) in the previous year, when the pair had outbid him for a grant of the keeping of the alien priory of Linton, Cambridgeshire.
By the 1440s, Cotton was playing a greater part than hitherto in the administration of his shire. A member of the quorum from his initial appointment as a j.p. in Cambridgeshire, he served on every subsequent commission of the peace in the county until his death. He was therefore one of the busier j.p.s, although he did not attend the quarter sessions after 1446.
In the meantime, Cotton’s career at Court flourished. By Michaelmas 1443 he was one of the King’s esquires,
After entering the queen’s service, Cotton received from her the additional offices of keeper and ranger of Enfield park and parker of Walden in the south of England, all almost certainly sinecures. Elsewhere, by 1449-50, he was joint constable of Clitheroe castle in Lancashire, part of the duchy of Lancaster. He shared the office with another household esquire, Philip Wentworth, also his joint constable at another duchy property, Offton castle in Suffolk. During their possibly brief tenure at Clitheroe, one of the duchy’s auditors questioned the validity of their office, asserting that it had not existed in the past. Yet it would appear that this diligent official was mistaken, since there were constables of Clitheroe both before and after it was in the hands of the two esquires.
In December 1450, Cotton succeeded Sir Thomas Tuddenham* as keeper of the great wardrobe. John Paston* heard the news from one of his correspondents in early January: ‘Tudenham is owte of þe Kynges hows and Cotton is warderopper’.
Upon coming into his own in the middle of the previous decade, Cotton cannot have had many spare moments to attend to personal affairs. In July 1446, when he was busy as his father’s executor, he acquired letters excusing him from further appointments to local office and from having to accept the potentially burdensome honour of knighthood,
The Parliament of 1453 met in uniquely favourable circumstances to the King and his principal adviser, the duke of Somerset, and Cotton was just one of a significant number of courtiers returned to the Commons. It is possible that his Membership of his second Parliament had likewise been no coincidence, since it appears to have contained a larger than usual household element among its knights of the shire. The Parliament of 1447 met at Bury St. Edmunds, well away from London where the government’s chief opponent, Humphrey, duke of Gloucester, was popular. Furthermore, the duke’s arrest upon arriving at Bury and his death in captivity just days later provides the basis of the commonly held theory that the chief purpose for summoning the Parliament was to bring him down. Cotton’s three terms as an MP were not his sole experience of Parliament, since he also attended sessions of the Parliaments of 1449-50 at Winchester and Leicester on duchy of Lancaster business.
Whether or not Cotton owed his seats in the Parliaments of 1447 and 1453 to his connexion with the Lancastrian establishment, he was easily of sufficient means to meet the criteria expected of a knight of the shire. Apart from his offices and fees, by the end of his life he possessed at least five valuable manors, four in Cambridgeshire and one in Suffolk, and enjoyed an income from sheep-farming.
In the event, Cotton never took possession of New Hall because he predeceased Agnes Alred,
The inquisitions post mortem held for Cotton in Cambridgeshire and Suffolk in the autumn of 1455 reported that Cotton had held no lands in chief in either shire on the day he died, so he must have settled his estates in such a way as to escape the escheators’ notice.
