This MP’s family took its name from the Somerset vill of Halswille in Goathurst, which an ancestor held of the prior of Taunton in the late thirteenth century. In 1428 this property pertained to William Halsewell (who attested the Somerset elections in 1421 and 1427), but thereafter its descent is obscure, and it may not have fallen to the MP until late in his lifetime.
To judge from certain aspects of that career Halsewell may have been trained in the law, and in later years he was styled ‘gentleman’ or ‘esquire’. He first appears in the records in March 1422, when simply as ‘of Somerset’ he stood surety at the Exchequer for two men from Wiltshire – Henry Chancy* of Collingbourne and John Benger† the younger – then granted the wardship and marriage of the son and heir of Henry Thorp†, the former knight of the shire.
When Halsewell was returned to Parliament for the third time, in 1433, it was as a representative for the Somerset borough of Bridgwater, situated some three miles from the family home.
Thereafter, Halsewell busied himself in the affairs of other members of the Somerset gentry and in administrative matters on behalf of the Crown. Described as ‘literatus’ he acted as proctor for a priest presented by Alexander Hody* to the chaplaincy of the chantry at Woolavington, and in May 1447 he was rewarded at the Exchequer for seizing three packs of wool subject to confiscation to the King.
Halsewell’s final years were troubled by lawsuits, some of them arising from his executorship of the will of John Gerard (d.1465) of Sandford Orcas. He petitioned the chancellor in about Hilary term 1470 with regard to an action taken against him by his former associate William Browning for a debt of £20 supposedly owed by the deceased,
Halsewell, by then long in years, may not have lived much longer. In February 1473 he was party to an indenture confirming the interest for life of the widowed daughter-in-law of the late John Sydenham in property in Somerset and Dorset,
