Question: Who did Philip Carteret Frs marry?

Knowledge 1: Philip Carteret FRS
Sir Philip Carteret, FRS (1641 – 1672), was the eldest son of Sir George Carteret and his wife and cousin Elizabeth de Cartetet.Philip was elected Fellow of the Royal Society on 15 February 1665.He married Jemima Montagu, daughter of Edward Montagu, 1st Earl of Sandwich and Jemima Crewe, in an arranged marriage on 31 July 1665.Samuel Pepys had a hand in the marriage and wrote of it at some length in his diary.Jemima had only known of Philip some fourteen days before their marriage: Pepys did ask her if she could like Philip as a husband, and was relieved when she answered that she thought she could like him very well.It was noted that Jemima failed to arrive in time for the ceremony at the church, but the marriage is thought to have been reasonably happy.Jemima died in childbirth in 1671.Philip was father of four children, including George Carteret, 1st Baron Carteret.Knighted in 1667, he became Gentleman of the King's Chamber in 1670.Philip died along with his father-in-law the Earl of Sandwich when their ship, the "Prince Royal", was grappled by a Dutch
fire ship in the Battle of Solebay. [SEP] Knowledge 2: George Carteret, 1st Baron Carteret
George Carteret, 1st Baron Carteret(July 1667 – 22 September 1695) was son of Sir Philip Carteret (died 1672) and the grandson of George Carteret.His mother was Lady Jemima Montagu, daughter of Edward Montagu, 1st Earl of Sandwich.He was left an orphan at the age of five, and was raised by his paternal grandparents.He married Lady Grace Granville (daughter of John Granville, 1st Earl of Bath and created Countess Granville in 1715), and by her was the father of John Carteret, 2nd Earl Granville.He was ennobled as Baron Carteret of Hawnes in 1681 in recognition of his grandfather's long career of loyalty to the English Crown, both during the English Civil War and after the Restoration of Charles II.He died in 1695, aged only 26; his widow outlived him by half a century.
Knowledge 1: Philip Carteret FRS
Sir Philip Carteret, FRS (1641 – 1672), was the eldest son of Sir George Carteret and his wife and cousin Elizabeth de Cartetet.Philip was elected Fellow of the Royal Society on 15 February 1665.He married Jemima Montagu, daughter of Edward Montagu, 1st Earl of Sandwich and Jemima Crewe, in an arranged marriage on 31 July 1665.Samuel Pepys had a hand in the marriage and wrote of it at some length in his diary.Jemima had only known of Philip some fourteen days before their marriage: Pepys did ask her if she could like Philip as a husband, and was relieved when she answered that she thought she could like him very well.It was noted that Jemima failed to arrive in time for the ceremony at the church, but the marriage is thought to have been reasonably happy.Jemima died in childbirth in 1671.Philip was father of four children, including George Carteret, 1st Baron Carteret.Knighted in 1667, he became Gentleman of the King's Chamber in 1670.Philip died along with his father-in-law the Earl of Sandwich when their ship, the "Prince Royal", was grappled by a Dutch
fire ship in the Battle of Solebay. [SEP] Knowledge 2: Éléonore Desmier d'Olbreuse
Éléonore Marie Desmier d'Olbreuse (3 January 1639 – 5 February 1722) was the wife of George William, Duke of Lauenburg and Prince of Celle.She was the mother of Sophia Dorothea of Celle, who was the wife of George I of Great Britain.Thus she is the maternal grandmother of George II.
Knowledge 1: Éléonore Desmier d'Olbreuse
Éléonore Marie Desmier d'Olbreuse (3 January 1639 – 5 February 1722) was the wife of George William, Duke of Lauenburg and Prince of Celle.She was the mother of Sophia Dorothea of Celle, who was the wife of George I of Great Britain.Thus she is the maternal grandmother of George II. [SEP] Knowledge 2: George Carteret, 1st Baron Carteret
George Carteret, 1st Baron Carteret(July 1667 – 22 September 1695) was son of Sir Philip Carteret (died 1672) and the grandson of George Carteret.His mother was Lady Jemima Montagu, daughter of Edward Montagu, 1st Earl of Sandwich.He was left an orphan at the age of five, and was raised by his paternal grandparents.He married Lady Grace Granville (daughter of John Granville, 1st Earl of Bath and created Countess Granville in 1715), and by her was the father of John Carteret, 2nd Earl Granville.He was ennobled as Baron Carteret of Hawnes in 1681 in recognition of his grandfather's long career of loyalty to the English Crown, both during the English Civil War and after the Restoration of Charles II.He died in 1695, aged only 26; his widow outlived him by half a century.

Answer: Lady Jemima Montagu