During the Civil War in the 17th century, Truro raised a sizeable force to fight for the king and a royalist mint was set up. Defeat by the Parliamentary troops came in 1646 and the mint was moved to Exeter. In 1646, Thomas Fairfax sent a summons of surrender to Ralph Hopton who replied on 8 March that he was willing to negotiate terms. Fairfax agreed to negotiate and on 10 March 1646 both sides met at Tresillian Bridge, some 3 miles east of Truro. Hopton agreed to move his army to St Allen as a gesture of trust and goodwill allowing Fairfax to occupy Truro.

 BNJ References - Truro