Lady Catherine Stewart (died 1765) (1713–1765) Parents Charles Stewart, 4th Earl of Traquair Mary Stewart, Countess of Traquair Children Lady Winifred Maxwell unknown daughter Maxwell Mary Maxwell Siblings Charles Stewart, 5th Earl of Traquair Barbara Stewart Robert Stewart Lady Mary Stewart Ann Stewart John Stewart, 6th Earl of Traquair Lucy Stewart Margaret Stewart William Stewart Partners William Maxwell, Earl of Nithsdale