Margaret Cecil, Countess of Salisbury, formerly Lady Margaret Manners (d. c.1682), was the wife of James Cecil, 3rd Earl of Salisbury.
Margaret was a daughter of John Manners, 8th Earl of Rutland, and his wife formerly the Hon Frances Montagu.
Three of Margaret's sisters, Frances, Elizabeth and Dorothy, became countesses.
She married the future earl on 1 October 1661, seven years before he inherited his grandfather's earldom.
[1] Their children, several of whom died in infancy, were:[2]