Their son George Leveson - Gower , 2nd Marquess of Stafford , was created Duke of Sutherland in 1833 .
Also , Lady Louisa Egerton , daughter of the first Duke of Bridgewater , married Granville Leveson - Gower , 1st Marquess of Stafford .
Their 1st Marquess of Stafford 1st Marquess of Stafford       , 2nd Marquess of 1st Marquess of Stafford , was created Duke of Sutherland in 1833 .
Also , Lady Louisa Egerton , daughter of the first Duke of Bridgewater , married Granville Leveson - Gower , 1st Marquess of Stafford .