High Quality Content by WIKIPEDIA articles! Charles Douglas, 3rd Duke of Queensberry and 2nd Duke of Dover PC (1698 1778) was a Scottish nobleman. The son of James Douglas, 2nd Duke of Queensberry, 1st Duke of Dover, and Mary Boyle, daughter of Charles Boyle, 3rd Viscount Dungarvan, was a Privy Counsellor and Vice Admiral of Scotland. He took up the cause of John Gay when a licence for his opera Polly was refused in 1728. He quarrelled with George II and resigned his appointments in the same year. He was a founding governor of the Foundling Hospital, created in 1739. He was appointed Keeper of the Great Seal of Scotland in 1761 and was Lord Justice General from 1763 to 1778. He was created Lord Douglas of Lockerbie, Dalveen and Thornhill, Viscount of Tiberris and Earl of Solway on 17 June 1706, these titles becoming extinct on his death.