Father of Leonard Charles Wyon (1826–1891); 1816: appointed as second engraver at the Royal Mint under his cousin, Thomas Wyon the younger; 1828: Wyon became chief engraver at the Royal Mint; 1838: Wyon was commissioned by the corporation of the City of London to execute a medal commemorating the queen's visit to the Guildhall; 1840: the ‘penny black’, bore a head of Victoria engraved from a drawing of Wyon's medal.