Lady Mary Wemyss Peerage person ID=198370 (b. 1612) Parents Jane Gray John Wemyss, 1st Earl of Wemyss Children Catherine Sinclair, Mistress of St. Clair Siblings David Wemyss, 2nd Earl of Wemyss Lady Anne Wemyss Lady Catherine Wemyss Partners John Sinclair, 9th Lord Sinclair