Background
Fiennes was the son of William Fiennes, 1st Viscount Saye and Sele, 8th Baron Saye and Sele and his wife Elizabeth Temple, daughter of John Temple of Stowe.
Fiennes was the son of William Fiennes, 1st Viscount Saye and Sele, 8th Baron Saye and Sele and his wife Elizabeth Temple, daughter of John Temple of Stowe.
He was elected Member of Parliament for Oxfordshire in 1626 and in 1628 and sat until 1629 when King Charles decided to rule without parliament for eleven years. In April 1640 he was re-elected Member of Parliament for Oxfordshire in the Short Parliament. He was re-elected Member of Parliament for Oxfordshire in November 1640 for the Long Parliament and sat until 1648.
He succeeded to the viscouncy on the death of his father in 1662.
He was Lord Lieutenant of Oxfordshire from 1668 until his death. Fiennes died at the age of 72.
Fiennes married Frances Cecil daughter of Edward Cecil, 1st Viscount Wimbledon. They had two daughters:
Frances, who married Andrew Ellis, of Alrey, county Flint, they had on child Cicely (died 1715) who died without issue.
Elisabeth (died 1674), who married John Twisleton, they had a daughter Cecil, (who married twice, first George Twisleton, of Wormesly in Yorkshire, and second Robert Mignon) through whom the Baron Saye and Sele is descended.
Short Parliament; Useless Parliament. 2nd Parliament of King Charles I]
In 1625, Fiennes was elected Member of Parliament for Banbury. In 1660, Fiennes was elected Member of Parliament for Oxfordshire in the Convention Parliament.