Lady Margaret was the daughter of
James Cecil, 3rd Earl of Salisbury and his wife
Margaret, a daughter of
the Earl of Rutland. She first married John Stawell, 2nd
Baron Stawell; he died in 1692 leaving considerable debts and a daughter Anne, who married John Baber, esq. of Sunning Hill Park, Berkshire. Margaret subsequently married
Richard Jones, 1st Earl of Ranelagh (d. 1712) on 9 January 1696, who was expelled from the House of Commons for
embezzlement in 1703. She was his second wife and they had no children. ==References==