Frances Cecil, Countess of Exeter (2 December 1630 – 2 December 1669),[1] formerly Lady Frances Manners, was the first wife of John Cecil, 4th Earl of Exeter.
She was a daughter of John Manners, 8th Earl of Rutland, and his wife, the former Frances Montagu.[2] The Countess of Exeter's sisters, Margaret, Elizabeth and Dorothy, all became countesses. Another, Anne, became a Viscountess.
She married the earl on 8 December 1646.
Two of their children survived infancy:
The countess's portrait in miniature was painted in about 1646 (the year of her marriage) by Samuel Cooper, and is held by Burghley House.[4]
Some sources give the date of her death as 1660, but the parish register of St Martin's Church, Stamford, shows her to have been buried in December 1669.[1] A few weeks after her death, the earl married Lady Mary Fane, daughter of Mildmay Fane, 2nd Earl of Westmorland.