Mary Boyle was born circa 1664 to Charles Boyle, 3rd Viscount Dungarvan (1639-1694) and Jane Seymour (1637-1679) and died 2 October 1709 Bond Street, London, Greater London, England, United Kingdom of unspecified causes. She married James Douglas, 2nd Duke of Queensberry (1672-1711) 1 December 1685 .
|Offspring of James Douglas, 2nd Duke of Queensberry and Mary Boyle (c1664-1709)|
|William Douglas (1696-1696)|
|James Douglas, 3rd Marquess of Queensberry (1697-1715)|
|Charles Douglas, 3rd Duke of Queensberry (c1698-1778)|
|Jane Douglas (1701-1729)||24 May 1701 London, Greater London, England, United Kingdom||31 August 1729 Langley, Buckinghamshire, England, United Kingdom||Francis Scott, 2nd Duke of Buccleuch (1695-1751)|