Nothing is known about Chancy’s parents, but he may be presumed to be a native of Wiltshire, where his family held the manor of Sunton in Collingbourne Kingston.
Meanwhile, Chancy had been named as a collector of parliamentary subsidies in Wiltshire in December 1421 and again less than a year later. In January 1423 he obtained confirmation of his patent as warrener of Purbeck from the council of the young King Henry VI, and made sure that orders were sent to the Exchequer to allow his fee to be deducted from the issues of Dorset.
An argumentative man, in the 1420s and 1430s Chancy was engaged in a number of lawsuits, often making allegations that his goods or crops at Marlborough and Collingbourne had been stolen.
On 6 Sept. 1435, together with his two sons, our MP attested the Wiltshire elections to the Parliament summoned to meet in October, endorsing the return of Sir William Sturmy’s grandson and coheir John Seymour I* as one of the shire knights.
Their relationship with a much more powerful Wiltshire landowner was far less satisfactory, for Thomas was among those whom Humphrey, duke of Gloucester, accused of poaching in his local chases and warrens in Michaelmas term 1439. At the same time one Alice Mallewayne accused our MP in the common pleas of failing to make proper account as her receiver. He was put in exigent, with bail provided by his sons Thomas and Nicholas Chancy (the latter now described as ‘of Newbury, Berkshire’) and two Wiltshire lawyers, John Uffenham* and Nicholas Wotton II*, but was outlawed for failing to appear in court to answer the charge. He successfully sued for a pardon of outlawry on 2 May 1440.
Chancy died shortly before 20 Nov. 1442.
