The name Hannibal was rare outside Cornwall during this period, but popular with the Vyvyan family and its immediate circle.
It was Vyvyan’s position as keeper of the Stannary gaol which led indirectly to his entry into Parliament. Around the summer of 1627, John Mohun*, vice-warden of the Stannaries, revived a plea of debt against William May, who had allegedly offended him. Placed in Vyvyan’s charge at Lostwithiel gaol, May struck a deal with his creditor which, though it fell short of the court’s decree, led Vyvyan to release him. An enraged Mohun promptly imprisoned Vyvyan for contempt of court.
In the following decade Vyvyan served three times as Lostwithiel’s mayor. Although he refused to compound for knighthood on the grounds that his income was too low to qualify him for this rank, he was now a prominent local figure. When he carried a message about Ship Money from the sheriff of Cornwall to the Privy Council in January 1635, he was described as ‘agent of the port towns’ of the county. He attended the Privy Council again in the following year, but this time it was to explain his failure to attend the Cornish musters. Shortly afterwards his reversion of the St. Mawes captaincy was cancelled, following his brother’s dismissal from the post.
Like several other middle-ranking Duchy officials, Vyvyan sided with Parliament in the Civil War. He was apparently present at the rout of Essex’s forces at Fowey in 1644, as he offered evidence to the resultant inquiry.
