Mary Herbert, Marchioness of Powis

[1] Mary was the eldest daughter and co-heir of Sir Thomas Preston, 3rd Baronet, of Furness and his wife, the former Hon.

[2] Her paternal grandfather was Sir John Preston, 1st Baronet.

[2] She married the Marquess of Powis, then known as Viscount Montgomery because of his father's links with the deposed king James II and VII, in about 1695.

[2] He was restored to his title and estates and recalled to Parliament in 1722; at this time he regained possession of Powis Castle, which the family had lost as the result of an action during the English Civil War.

[4] The couple had six children: The marchioness died on 8 January 1724, and was buried within her husband's property at Hendon.