Lady Margaret Stewart Peerage person ID=20267 (d. 1673) Parents Catherine Carnegie John Stewart, 1st Earl of Traquair Children Lady Margaret Douglas James Douglas Lady Margaret Douglas Lady Isabel Douglas Lady Henrietta Douglas Lady Mary Douglas John Douglas Lady Catherine Douglas Robert Douglas William Douglas, 1st Duke of Queensberry Siblings Lady Catherine Stewart Lady Anne Stewart John Stewart, 2nd Earl of Traquair Lady Elizabeth Stewart Partners James Douglas, 2nd Earl of Queensberry