Sir William Douglas, 4th Baronet Member of Parliament (1730–1783) Parents Christian Cuninghame Sir John Douglas, 3rd Baronet Children unknown daughter Douglas Charles Douglas, 6th Marquess of Queensberry Lord William Douglas unknown daughter Douglas John Douglas, 7th Marquess of Queensberry Henry Alexander Douglas unknown daughter Douglas Lady Mary Douglas Siblings Janet Douglas Catherine Douglas unknown daughter Douglas unknown daughter Douglas Charles James Sholto Douglas unknown Douglas unknown Douglas Partners Grace Johnstone
