Career
On 18 August 1687, Lady Mary married Edward Radclyffe, 2nd Earl of Derwentwater (9 December 1655 – 29 April 1705) by whom she had four children:
James Radclyffe, 3rd Earl of Derwentwater (1689–1716)
Lady Mary Tudor Radclyffe
Charles Radclyffe (3 September 1693 – 8 December 1746)
Honorary Francis Radclyffe
On 23 May 1705, shortly after Lord Derwentwater"s death, Mary married Henry Graham. Her sons James and Charles were dedicated Jacobites, who were both executed for rebellion and treason.
She died in Paris on 5 November 1726, shortly after her fifty-third birthday.