Lady Margaret Stewart (1696-1747) (1696–1747) Parents James Stewart, 5th Earl of Galloway Lady Catherine Montgomerie Children unknown son Carnegie unknown daughter Carnegie Siblings Lady Anne Stewart Lady Catherine Stewart Alexander Stewart, 6th Earl of Galloway Lady Mary Stewart George Stewart Lady Euphemia Stewart William Stewart John Stewart James Stewart Partners James Carnegie, 5th Earl of Southesk John St Clair, Master of Sinclair