Thomas de la More (also Dalamore or Delamore; 1395 – 1459 / 1460 / 1 June 1461) was a fifteenth-century sheriff of Cumberland. Little is known of his early years, but he was a royal official in Cumberland and Westmorland for all his adult life, serving as member of parliament, escheator and justice of the peace on multiple occasions. Although never wealthy, de la More was a man of social and political significance in the area and regularly acted on behalf of his fellow gentry. He entered the circle of Richard Neville, Earl of Salisbury at some point in the 1440s. He was frequently appointed sheriff of Cumberland. Because of this, and his close connection to the Percy family's rivals, the Nevilles, he eventually became involved in the struggle for local supremacy in the 1450s that broke out between the two families. Between 1453 and 1454, his men were beaten and threatened by Thomas Percy, Lord Egremont. In 1455, de la More petitioned the King, accusing Egremont of rampaging through Cumberland, assaulting de la More and threatening his life. He claimed this prevented him, as sheriff, from collecting money for the Treasury, although the damage to the land from Scottish incursions was more to blame. De la More played no active part in the Wars of the Roses, which broke out the same year.

De la More is known to have married, although how often and to whom is debated; his wife or wives were either called Maud, Idione or Margaret, and either Maud or Margaret may have survived him. He left two daughters, Margaret and Isabel, who both married into local families of significant rank. De la More died sometime between 1459 and 1461 and was probably buried in a family vault in Brampton Old Church, Cumberland.

Early life and marriage The earlier history of the family is obscure, although they are known to have settled in the county Cumberland, in the north of England, during the reign of King Henry III (1216–1272), and may have held the manor of Kirkdale in 1280. A John More was verderer of Inglewood Forest and died in 1377. Another John, of Cumcatch, Cumberland, represented the county at the 1404 parliament and helped negotiate the truce with Scotland three years later. The medievalist Carole Rawcliffe has suggested that Thomas was "almost certainly related to [the latter] John, who may just possibly have been [his] father". Continuing the uncertainty, little is also known of Thomas's early life. According to his own testimony, he was born in 1395. The parliamentary historian J. C. Wedgwood originally suggested that he may have been the son of a namesake who attended the 1420 parliament. Rawcliffe, however, has demonstrated that Wedgwood "mistakenly assumed that two different men, father and son, must have sat for Cumberland in 1420 and 1450, whereas they were one and the same". A William More, who died in 1434, also represented the county at the 1407 parliament and was probably a relation of John; Rawcliffe states that William was a kinsman of de la More.

According to the medievalist Peter Booth, de la More probably trained as a lawyer. In 1415, he was discovered leading secret raiding parties across the Scottish border and was arrested by officers of the Warden of the East March for breaking the truce. At some point, de la More came into lands in Cumcatch, which he augmented by purchasing property in Branthwaite and taking out a 20-year lease on the manors of West Farlam and Sebergham, suburbs of Carlisle, from the Crown.

Family De la More's domestic situation is confused, with the names and even the number of his wives disputed. Wedgwood and Rawcliffe both agree that he married into the powerful Sandford family, and further, says Rawcliffe, that his wife brought him the manor of Little Asby by jointure in 1419. Rawcliffe calls her Maud, but Wedgwood names her Idione Sandford. Either way, this union would have made de la More brother-in-law to Robert Sandford of Askham, Westmorland, MP for Appleby in 1413, and an important member of the local gentry. Wiliam Sandford had also been a connection of the Neville family, and de la More's wife could count both Henry Percy, Earl of Northumberland and Ralph Neville, Earl of Westmorland among her feoffees.

Rawcliffe also proposes that he married again, this time to a woman now known only as Margaret, who jointly administered his effects after his death. Most recently, Payling has intimated that he married only once, or that, at least, a wife who survived him until 1464 was also called Maud. De la More had two daughters, Margaret and Isabel.

Royal office and parliamentary service

King Henry VI was six months old when his father died in 1422. Young Henry began his personal rule in 1437 and to demonstrate his coming of age, he issued a royal pardon. This was available to whoever sued for one, and de la More duly availed himself. This does not necessarily indicate that de la More had committed a crime; the economic historian Christopher Dyer notes that general pardons such as that issued in 1437 were often requested as a form of insurance against malicious accusations.

Later indictment records from the local King's Bench show that by 1429, de la More had sheltered one Robert Bell, a yeoman of Patterdale, from the law. Bell was a member of a local family who appeared frequently in the local assize records for crimes including trespass, assault, theft and killings. The Robert Bell case resulted in an arbitration taking place between de la More and Bell towards Bell's victim, Sir John Greystoke, although the nature of Bell's offence is unknown.

By the 15th century, the role of country gentry had crystallized around exercising royal authority locally, effectively its delegates. By then it was customary for the Crown to look to this class to fill local administrative and judicial posts, the most important of these being sheriff and justice of the peace. It was in offices such as these that de la More's full-time public career began. He was variously appointed royal escheator for 1431 to 1432 for both Cumberland and Westmorland, and Sheriff of Cumberland for 1443–1444, 1447–1448 and 1452–1453. De la More was also an elector of the county—effectively a voter—in 1437, 1442, 1447 and 1449. This was an important position, as elections often took place under pressure from both the Crown and local nobility, and the gentry were a highly political class. The historian K. B. McFarlane comments that "they were willing to be guided by those who had claims on their support; but it was foolish to attempt to drive them with too tight a rein", and neither Crown nor local aristocracy could guarantee their preferred candidate's election.

De la More was elected Member of Parliament (MP) for Cumberland four times, in 1420, 1429, 1450 and 1455. His second election involved de la More in what Rawcliffe has called "a flagrant breach of the law", and which demonstrates the power a sheriff had over an election: they were "perhaps best placed to influence an election, either in their own interest or that of another party". His fellow candidate, Sir William Leigh, was not favoured by the then-sheriff Christopher Moresby, who replaced Leigh with his own choice of candidate, Sir Thomas Parr, at the first opportunity. This was done without consulting the county court as was required. That Moresby could commit this political chicanery was due to the original writs of summons being superseded by another that arrived too late for the election. He had only to write Parr's and de la More's names on the new writ before returning it. The subsequent investigation into Moresby extended into de la More's own first term as sheriff. The most powerful and influential aristocratic families in the region were the Nevilles, based in Carlisle, and the Percys in Cockermouth; the historian Henry Summerson has suggested that this election is an early indicator of rivalry between them, as Leigh may have been a Percy retainer. This thesis, however, has been challenged by Simon Payling, who argues that Leigh lacked full Percy backing, and that in any case, that there is no independent evidence for the existence of such rivalry between the two families at this point.

De la More took the 1434 oath not to harbour criminals and disturbers of the King's Peace; those who took the oath promised "that they would neither use their wealth and influence to undertake criminal activities nor maintain lesser men" who did. This indicates, argues the prosopographer Gilbert Bogner, that de la More was a propertied man, effectively at knightly level, and a "prominent" member of the gentry. The historian R. A. Griffiths suggests that men such as de la More were "socially prominent or politically powerful" in their regions. De la More performed legal services for his neighbours also. For example, he was executor to his colleague Sir Robert Lowther's will in 1430, and sat on an assize assessing William Stapleton's claim to an estate in Black Hall. He also presented oral evidence to his kinsman William de la More's inquisition post mortem (IPM) and acted as a mainpernor to others. In the tax of 1436, his annual income was valued at £20, and although this was probably an underestimate, he was not among the wealthiest of the gentry elite. This figure was, however, well over the £5 annual income which Dyer has established to have been considered by the Crown as "marking a significant social benchmark". Booth has argued that men of de la More's rank did not usually achieve the position of sheriff; escheator, he suggests, was usually the highest rank they could expect to reach. It was not his wealth, though, suggests Payling, that led to his important position in Cumberland society: "he owed that to his place in the service of Richard Neville, Earl of Salisbury". Salisbury was Warden of the West Marches—effectively the King's guardian of the border with Scotland—and one of the most powerful men in the country. As sheriff, de la More was thus placed in close contact with the earl, as the warden and the sheriff had to work together.

When de la More attended the 1450 parliament, it was his first in over 20 years. Writs of summons were issued on 5 September, and at the Cumberland hustings of 17 October, he was returned as Salisbury's candidate. In what appears to have been a political compromise, de la More's co-candidate, Thomas Crackenthorpe, had been in the service of the Earl of Northumberland for several years. De la More did not stand for the next parliament, summoned for 6 March 1453, but as sheriff, he had to oversee the election. As a close connection of Salisbury's, "it would be surprising if de la More did not play a significant part in thwarting Percy interests" on that occasion, argues Payling. That there was felt to be some irregularity on de la More's part is clear; the writs had arrived in time only to hold the election a week after parliament had already assembled. The result was contested, a parliamentary commission was appointed to investigate and de la More subsequently presented 154 attestors to certify the result, far more than any other for the county that century. This may have been a show of the Nevilles' strength, intended to quell Percy influence; also suggestive of the role that local partisan politics played, the lead attestor was Salisbury's son, Sir Thomas Neville. Both men elected, John Skelton and Roland Vaux, were also retainers of Salisbury's.

Relations with the Earl of Salisbury