Sir Thomas Lewknor’s position as a landowner of considerable substance enabled him to negotiate advantageous marriages for his many children, and in particular for his heir, John’s half-brother Roger, and for John himself. Both were married to heiresses, in John’s case to Joan Halsham, with whose family the Lewknors had long been associated as members of the leading gentry of Sussex. The Halshams, who had been lords of the manor of West Grinstead since the mid fourteenth century, established prestigious connexions, and Joan’s paternal grandmother Philippa (d.1395) was the daughter and coheiress of David Strathbogie, last earl of Atholl. The bulk of the Halsham estates in Sussex, Norfolk and elsewhere came to Hugh, the eldest of three sons, who served alongside John Lewknor’s father in the earl of Arundel’s retinue on Henry V’s expedition to France in 1415. Hugh’s next brother, Richard, took part in the same military campaign, although the story goes that he had once been a monk in Paris but quitted his monastery in order to marry. This seems far-fetched, although rumours persisted as late as 1468, when depositions stressed that Richard ‘nunquam fuit vir religious’. Richard’s daughter Joan was not mentioned in the will made by her uncle Sir Hugh on 7 Feb. 1442, even though he made many monetary bequests, amounting to at least £300. Sir Hugh left instructions for the sale of some of his lands in West Grinstead and elsewhere to provide good works for his soul and that of his brother Richard among others; and the feoffees of his manor of Brabourne in Kent, after allowing his executors to have the profits for three years to maintain two chantry priests, were told to then make estate to his ‘next heirs’ provided they did not ‘lette’ his will.
Although the Lewknors had successfully established Joan’s title to the Halsham estates in Norfolk, they had more difficulty proving her claim to those in Sussex, notably the manors of West Grinstead and Coombes in Applesham. Entails made in 1403 had laid down that if neither Hugh or Richard Halsham had male issue, these properties were to remain to the heirs of the body of their father. Joan’s claim to them was therefore challenged by her paternal uncle John (her father’s half-brother). Beginning in Trinity term 1443, the Lewknors had brought suits in the court of common pleas against Sir Hugh Halsham’s feoffees of these properties (including the lawyers Edmund Mille* and William Sydney*), and then against Joan’s uncle. These continued unresolved for several years.
In his youth John had been placed in the royal household, at least for the two years from Michaelmas 1441,
John again attended the Sussex elections on 22 Feb. 1453, this time attesting the return of his half-brother Roger, who had recently been knighted in the illustrious company of the King’s kinsmen Edmund and Jasper Tudor. His full brother, Richard, was elected for Bramber.
During the 1450s John was also engaged in transactions on behalf of other members of his family. Alongside his father he was a feoffee of the estates in Dorset held in jointure by their kinswoman Anne Etchingham, widow of John Roger of Bryanstone, and they may have played a part in arranging her subsequent marriage to Lord Audley’s heir, John Audley*, who sat with (Sir) Roger Lewknor in the Parliament of 1453.
There is little to indicate how John’s personal affairs were affected by the civil war of 1459-61, although clearly this was a period of financial difficulty for him. An official inquiry was held in August 1459 about the Halsham manors of Stiffkey and Holkham in Norfolk, which he and his wife had conveyed to Geoffrey Boleyn and others in 1448 without first obtaining a royal licence. Lewknor was returned to the Parliament which met at Coventry three months later, albeit this time as a representative of the Sussex borough of Horsham, rather than as a shire knight. His brother Richard was his fellow MP. Neither were burgesses of the town (indeed, both were described as esquires), and it seems very likely that their election had been promoted by their half-brother Hoo, an influential landowner in the locality. After the dissolution, John’s whereabouts are not recorded until the immediate aftermath of the Yorkist victory at Northampton in the following summer. On 28 Aug. 1460 he joined with his kinsman Thomas Etchingham and with Ralph St. Leger of Ulcombe, Kent, in acknowledging a debt of £220 to Richard Lee* and John Crosby†, the London grocers, payable by Michaelmas. When they failed to pay up a writ was sent to the sheriff of Kent on 8 June 1463 to arrest them and confiscate their property to pay their creditors. The return stated that they could not be found in Kent, and had no moveable goods there, although Lewknor’s manor of Brabourne was worth £50 p.a.
In the 1460s John became entangled in further complicated dealings dreamt up by his half-brother Thomas Hoo, this time concerning the estates held by the childless Sir John Burcester and his wife Elizabeth: the manors of Burghersh and Peasmarsh in Sussex, ‘The Maze’ in Southwark, Surrey, and Ewell and its appurtenances in Middlesex, as well as property in London. The plan was for Hoo to purchase a reversionary interest in the estates and settle it on John and his wife to compensate them for their loss of the Halsham manors in Norfolk. Certain of the necessary transactions took place in 1462 and 1463.
It is now impossible to guess why Lewknor welcomed the return of Henry VI to the throne in the autumn of 1470, although one cause may have been resentment at the rise of Scott, a leading Yorkist. He was appointed to the Sussex bench by the restored regime. During the Parliament summoned to assemble in King Henry’s name on 26 Nov., John and his brothers Thomas and Richard lent their support to Thomas Hoo in entering bonds for over £800 due to his creditors, and promised that their half-brother would give himself up to the Fleet prison at the end of six months after the dissolution of the Parliament, to pay his debts.
Lewknor failed to leave a will and administration of his goods and chattels was assigned to his widow’s kinsman, Hugh Shuldham.
