Susanna Leveson-Gower, Marchioness of Stafford, styled Lady Susanna Stewart from 1742 to 1768, Countess Gower until 1786, Marchioness of Stafford until 1803 and Dowager Marchioness of Stafford until her death in 1805, was a British noblewoman, who in 1768 became the wife of Granville Leveson-Gower, 1st Marquess of Stafford and a member of the Leveson-Gower family. Wikipedia