The date of Henry Long’s birth is uncertain. According to the inquisition post mortem held in Hampshire after his father’s death in 1447, he was then aged 30 ‘and more’. This might mean that he was born in about 1417, and was only 18 or so when returned to the Parliament of 1435 for Old Sarum, although as the date of his parents’ marriage is not known he may well have been older. His father attested the shire elections for that Parliament, but did not on this occasion accompany him to the Commons. Henry apparently trained to be a lawyer (and was probably still studying at the time of his first Parliament). In the following year he was associated with his father and with William Ringbourne* (probably his brother-in-law) in the acquisition of land in Box and Haugh in Wiltshire, and in 1438 Ringbourne settled the manor and advowson of Draycot Cerne in remainder on Henry’s younger brother, John.
These were the earliest of very many legal transactions to which Henry was a party. His father had long been linked with the powerful family of Hungerford, whose members he frequently assisted in their affairs, and he himself continued this association for much of his life. In March 1438 he, the Hungerford retainer Thomas Tropenell* and Richard Chokke, having been pardoned for acquiring without royal licence the manor of Imber from William Rous, were permitted to grant it to Walter, Lord Hungerford†, in return for a yearly rent of £24 payable to Rous. The conveyance, along with that of another Wiltshire manor and a moiety of Folke in Dorset, was completed shortly afterwards. Long’s undefined role in Hungerford’s service led on one occasion to him accompanying Tropenell to deliver a large sum of money from the peer to his grandson, Robert, Lord Moleyns.
Henry’s first marriage, no doubt arranged by his father, was contracted before the summer of 1441. His wife, Joan Malwyn, was the heiress of the Wiltshire manors of Etchilhampton and Marden, which together with a number of other properties and the advowson of Marden were then settled on the couple and their issue.
Henry’s inheritance qualified him for election as a knight of the shire early in 1449, together with (Sir) John Baynton*, a leading member of the Hungerford affinity. From then on he was kept busy in the administration of the region, serving most notably on commissions of gaol delivery, to which he was nearly always named on the quorum. While again a MP in 1453 he was appointed to the quorum of the Wiltshire bench, on which he was to remain without break until his death – a period of 37 years all told. While in the Commons that same summer he was associated with two members of the Upper House, the cousins Ralph Butler, Lord Sudeley, and Sir William Beauchamp*, Lord St. Amand, in transactions concerning the Wiltshire manor of Tytherton Lucas, which he seems to have acquired for himself,
It would seem that Long avoided taking a partisan approach in the civil war years of 1459-61, for there was no noticeable interruption in his appointments to royal commissions through changes of regime, nor to his diligence in carrying out his assignments following the accession of Edward IV. In the summer of 1462 when funds were needed to man and victual The Trinite of Lymington, putting to sea under the command of the earl of Kent and Lord Audley*, he contributed £2, the largest sum raised in Salisbury. The pardon he purchased on 20 Oct. that year referred to his earlier post as sheriff, and was presumably intended to exonerate him from unpaid dues and fines.
Although Long is not recorded as sitting in Parliament for nearly 20 years after his election in 1453, it is possible that during this period he occupied one of the seven seats for which returns for Wiltshire are no longer extant. At Salisbury in April 1470 he contributed 53s. 4d. (much more than anyone else) to pay the men sent by the city to join Edward IV’s army in pursuit of the rebellious duke of Clarence and earl of Warwick, yet his connexion with the duke’s retainer (Sir) Roger Tocotes made him acceptable to the new regime that autumn, after the King had fled into exile and Warwick and Clarence reinstated Henry VI. At this crucial time, in October 1470, he was recorded with Tocotes and Bishop Beauchamp as recipients of the goods and chattels of William Beaushyn.
Throughout his career Long had been a popular choice as a trustee of landed estates on behalf of fellow members of the gentry of Wiltshire and Hampshire, among them Sir Maurice Berkeley II* of Beverstone,
Naturally, the members of Long’s own family relied on him as a trustee, a role he performed for William Ringbourne and his wife (presumed to be Long’s sister), and their son and heir, Robert (d.1485);
