Pierrepont died in 1715, and both his titles became extinct.

The Marquess married Mary, daughter of William Feilding, third Earl of
Denbigh, by his first wife, Mary, sister of John, first Baron of
Kingston, in the peerage of Ireland. Lady Mary was, therefore, a
relation of the novelist, Henry Fielding, whose surname was spelt
differently because, he explained, his branch of the family was the only
one that could spell correctly.

Of this marriage, there was issue:

(i.) William, who took the style of Viscount Newark until 1706, and then
was known as Earl of Kingston until his death in 1713, at the age of
twenty-one. He had married before 1711 Rachel, daughter of Thomas
Baynton, of Little Charfield, Wilts, who outlived her husband eight
years. There was a son, Evelyn, who succeeded to the peerage.

(ii.) Lady Mary, the subject of this memoir.

(iii.) Lady Frances, who in 1714 became the second wife of John Erskine,
sixth or eleventh Earl of Mar; and

(iv.) Lady Evelyn, who married John, second Baron, and afterwards first
Earl Gower, and died in June, 1727.

In the winter of 1697, when Lady Mary was eight years old, her mother
died. After this, the little girl was allowed to run rather wild. Lord
Kingston was very much a man about town and a gallant, and was too
greatly occupied with his affairs and his parliamentary duties, which
took him often from home, to concern himself about her education. In