Lady Mary Douglas Peerage person ID=109695 (b. 1578) Parents Elizabeth Oliphant William Douglas, 10th Earl of Angus Children Lady Margaret Livingstone Alexander Livingston, 2nd Earl of Callendar Siblings James Douglas, 1st Lord Mordington Lady Catherine Douglas Lady Elizabeth Douglas Sir Francis Douglas William Douglas, 1st Marquess of Douglas Partners Alexander Livingstone, 2nd Earl of Linlithgow