To add to the earlier biography,
Indicative of Arundell’s standing in Cornwall is the range of members of the county gentry and greater clergy (men as diverse as the lawyer John Jaybien†, members of the family of Colyn of Helland and the prior of Launceston) who called upon him to witness their property transactions. In his father’s and elder brother’s lifetimes he did so alongside them, but later he was associated with members of some of the most important families in the region, including Sir William Bonville*, Sir Ralph Botreaux* and Sir John Herle*, and often took pride of place over them.
Like many of his neighbours Sir Thomas had interests in the Cornish tin industry, or at least suffered from the privileged position afforded to the tinners. He was a regular litigant in the stannary courts, pursuing members of the mining community for real or imagined breaches of his privileges by taking firewood or depasturing grass.
Arundell was succeeded by his elder son, John, during whose minority the family estates were placed in the custody of Thomas Portalyn* and John Devenish*, two servants of the young Henry Beauchamp, duke of Warwick, probably acting on behalf of their master.
