This MP has generally been identified as the son of another Thomas Arblaster by the coheiress of the manor of Mancetter, but this identification depends on the assumption that the son inherited the family estates in the early 1430s.
The Arblasters had enduring connexions with the bishops of Coventry and Lichfield, who were considerable landowners in the immediate locality of their own estates at Longdon. Our MP’s grandfather, Adam Arblaster†, who sat as knight of the shire for Staffordshire in the first Parliament of 1352, was bailiff of the bishop’s liberty in the 1340s, and he was succeeded in that office by his son, James, who also served the bishops as ranger of their chase of Cannock. James, although by no means a significant figure, also had other associations: as a young man in 1361 he had served in Ireland under Ralph, earl of Stafford; and in 1398 he was described as ‘King’s servant’.
Arblaster’s career was exceptionally long and began in his father’s lifetime. He was probably born in the late 1370s, for he is likely to have been of age when he leased from Sir Baldwin Freville of Tamworth (Staffordshire), who died in 1400, a messuage, a garden and two acres of wood in Middleton (Warwickshire).
After Earl Edmund’s death, Arblaster moved into the service of the earl’s widow, Anne, and her third husband, Sir William Bourgchier† (d.1420). By 1405, at the generous annual fee of £20, he was constable of Anne’s fine Welsh castle of Caldicot, largely rebuilt by her father, Thomas of Woodstock, duke of Gloucester.
Arblaster’s emergence as an important figure in his native county coincided with the coming of age of Earl Edmund’s son, Humphrey, who had livery of his estates in 1423. He quickly made himself one of the young man’s most valued retainers. He was elected to represent Staffordshire in Parliament on 14 Feb. 1426, and on 3 Apr. 1427 he witnessed the young earl’s confirmation, dated at Newport castle, of the charter granted to the borough of Newport by the Staffords in 1385.
Aside from his service to the earl of Stafford, Arblaster was also, like his father and grandfather before him, a servant of the bishops of Coventry and Lichfield. By 1426 he was acting as Bishop Heyworth’s parker at Beaudesert, very near his home, an office which was to become, if it was not already, hereditary in his family. None the less, there is no evidence that his connexion with successive bishops had much impact on the pattern of his career.
However this may be, membership of the royal household brought about an expansion in his role in local administration. From the mid 1430s he was routinely appointed to ad hoc commissions in Staffordshire, and early in 1439 he was added to the bench there. It also brought him some solid material benefits. On 21 Mar. 1439 he was named as surveyor of the duchy of Lancaster chase of Needwood, where his lord the earl of Stafford was master forester.
These modest marks of royal favour were followed by a much more important one. On 9 Dec. 1439, when Arblaster was again sitting as an MP, the Crown committed to him the keeping of the lands once of Thomas Leigh of Shelley (Essex) during the minority of the infant heir together with the heir’s marriage. He was to have this wardship and marriage without payment, and it is clear that this grant was made in the acknowledgement of his prior interest in the Leigh properties. Only five weeks earlier, Thomas Thorpe*, an Exchequer official, and Thomas Skargill*, a yeoman of the royal chamber, had undertaken to pay the Crown 40 marks for the marriage and over £13 p.a. for the land. Their right, however, was challenged. On 26 Nov. our MP joined the infant ward’s maternal grandfather, Thomas Boteler of Pitstone (Buckinghamshire), in undertaking, on pain of £100, to deliver the ward to Thorpe and Skargill. Clearly they had detained the boy, and even though our MP delivered him to Thorpe at St. Albans on 6 Dec., he had influence enough to secure a grant of his own only three days later. Since Arblaster’s son and heir, another Thomas, is known to have married the boy’s mother, Alice Boteler, it is a fair speculation that this marriage explains his interest in the matter.
Arblaster maintained his place in the royal household into the 1450s. He appears among the esquires of the hall and chamber in the surviving Household accounts for the period 1441 to 1452.
None the less, although he remained active into the 1450s, Arblaster was then in his seventies and that activity could not be long sustained. His date of death is unknown. He was certainly alive as late as the mid 1450s. In November 1454 he was still one of the ‘squiers of attendaunce’ on the King; in Michaelmas term 1455, described as ‘senior’, he was joint plaintiff in an action of debt against Walter Blount*, executor of the will of Sir John Gresley*; and in the following Easter term a verdict was awarded against him in an action of waste in respect of a small property at Middleton that he had taken at farm more than 50 years before.
