Charles Douglas, 6th Marquess of Queensberry

Charles Douglas, 6th Marquess of Queensberry, (March 1777 – 3 December 1837), known as Sir Charles Douglas, 5th Baronet between 1783 and 1810, was a Scottish peer and member of Clan Douglas.

Early life Douglas was the eldest son and heir of Sir William Douglas, 4th Baronet, and his wife, Grace, née Johnstone, of Lockerbie. Among his four brothers and four sisters were John Douglas, 7th Marquess of Queensberry and Lord William Douglas, MP for Dumfries Burghs.

From 1812 to 1832, he was a Scottish representative peer. He was made a Knight of the Thistle in the 1821 Coronation Honours and created Baron Solway, of Kinmount, in the County of Dumfries, in 1833. From 1831 to 1837, he served as Gentleman of the Bedchamber to William IV, a position which a member of Clan Douglas had occupied intermittently since the late seventeenth century.

As Marquess of Queensberry, Douglas also acted as Lord Lieutenant of the County of Dumfries, Colonel of the Dumfries Militia and director of the Royal Scottish Academy. Lady Jane Margaret Mary Douglas (1811–1881), who married her cousin, Robert Johnston-Douglas, in 1841; parents of Arthur Johnstone-Douglas.

After a period of ill health, Queensberry died at his home at St James's Place, London in December 1837. The marquessate and baronetcy passed to his brother, John Douglas, 7th Marquess of Queensberry, while the barony of Solway became extinct.