William, the only son, was put to school first at The King's School, Grantham, and then Stamford School, which he later saved and endowed. In May 1535, at the age of fourteen, he went to St John's College, Cambridge, where he was brought into contact with the foremost scholars of the time, Roger Ascham and John Cheke, and acquired an unusual knowledge of Greek. He also acquired the affections of Cheke's sister, Mary, and was in 1541 removed by his father to Gray's Inn, without having taken a degree, as was common at the time for those not intending to enter the Church. The precaution proved useless and four months later Cecil committed one of the rare rash acts of his life in marrying Mary Cheke. The only child of this marriage, Thomas, the future Earl of Exeter, was born in May 1542, and in February 1543 Cecil's first wife died. Three years later, on 21 December 1546 he married Mildred Cooke, who was ranked by Ascham with Lady Jane Grey as one of the two most learned ladies in the kingdom, (aside from another of Ascham's pupils, Elizabeth Tudor, who was later Elizabeth I) and whose sister, Anne, was the wife of Sir Nicholas Bacon, and later the mother of Sir Francis Bacon.
