Due to his elder brother William having been "Lost in London," James became the heir of his father.
At Richmond, Yorkshire, on 27 Nov 1613, he married Beatrice Hutton, the eldest daughter of Sir Timothy Hutton, of Marske, by his wife Elizabeth Bowes, daughter of Sir George Bowes, who was a loyal supporter of the Queen.
Beatrice's father likely felt he had made an excellent match for his seventeen year old daughter, as James' father was a prominent Justice of the Peace, and Arnecliffe was a flourishing estate. Unfortunately, James did not have the business abilities of his father, and he became involved in a quarrel with the Crown early in the reign of Charles I over the question of knighthood.
The country at the time was in considerable discontent, and James was one of very few that prepared the way for the triumph of the popular party in the Long Parliament, by strenuously resisting what he considered illegal demands on the part of the crown. As a result, the king was quite severe on those who stood up for James Mauleverer in what James considered to be patriotic efforts. The efforts of James were not successful; he was fined £2.000 plus costs, and suffered the loss of rents while his estates were in the King's hands.
James became a speculator, likely to regain some of the resources he had lost. He purchased on borrowed money the manor of Ayton in Pickering Lythe as well as the Lord Eure's Wood at Eastthorpe, but the purchase was made just prior to the Civil War, and when the war broke out he was unable to fell the wood that he had counted on to pay off the borrowed funds. He took the side of Parliament in the Civil War, and became a Colonel in their service. The Long Parliament granted him £3,509 as a solatium for his sufferings. This was not sufficient to get him out of debt.
He became bankrupt in 1651, and was sent to prison the next year. He managed to get out of prison by paying costs, but the result was that he lost his estates, and he lost the right to be considered an Esquire as a result. During this period he lost, among other properties, Worthersome, which had been the family seat during the 15th and 16th centuries. He did, however, manage to buy back Arncliffe.
After his release from prison, he attempted to better his fortune by dabbling in alchemy. He invented several items, including a "Weapon Salve" and a remedy for staying blood. None of these activities helped him, and he eventually died on 24 April 1664, a prisoner for debt in York Castle, leaving no assets, and was buried at St Mary's Castlegate, York.
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