In the middle ages, Tregony had been a town of some significance, pre-dating Truro and Penryn as the main port of the Fal estuary.
The Trevanion/Arundell interest was still able to control the Tregony elections in 1640. In the elections for the Short Parliament, held on 17 March, the mayor and 12 other electors returned John Arundell I with another local gentleman, John Seyntaubyn of Clowance.
After the first civil war, on 11 November 1646, the Commons ordered that a new writ be issued for a ‘recruiter’ election to replace Vyvyan and Polwhele, who had been disabled from sitting in January 1644.
Tregony fell back into obscurity during the 1650s, and was noted only as a useful place for the local justices of the peace to gather, when they were considering the pressing of seamen from the Cornish ports in 1653.
Right of election: mayor, burgesses and inhabitants
Number of voters: 13 in Mar. 1640; 19 in Feb. 1647
