Around 1650 [her father] Thomas Crew 2nd Baron Crew (age 26) and Mary Townshend were married. She the daughter of Roger Townshend 1st Baronet and Mary Vere Countess of Westmoreland (age 42).

In 1674 [her father] Thomas Crew 2nd Baron Crew (age 50) and [her mother] Anne Armine (age 22) were married. The difference in their ages was 28 years.

Before 29 Apr 1681 [her step-father] Thomas Wodehouse and [her mother] Anne Armine (age 29) were married.

In 1694 Henry Grey 1st Duke Kent (age 23) and Jemima Crew Marchioness Kent (age 19) were married. He the son of Anthony Grey 1453 1490 11th Earl Kent (age 49) and Mary Lucas Countess Kent (age 50).

After 30 Nov 1697 [her step-father] Admiral Arthur Herbert 1st Earl Torrington (age 49) and [her mother] Anne Armine (age 45) were married.

On 20 Feb 1717 [her son-in-law] John Campbell 3rd Earl Breadalbaine and Holland (age 20) and [her daughter] Amabel Grey (age 19) were married. She the daughter of Henry Grey 1st Duke Kent (age 46) and Jemima Crew Marchioness Kent (age 42). He the son of John Campbell 2nd Earl Breadalbaine and Holland (age 54) and Henrietta Villiers Countess Breadalbaine and Holland.

On 17 Feb 1718 [her son] Anthony Grey 1453-1490 (age 22) and [her daughter-in-law] Mary Tufton Countess Gower were married. She the daughter of Thomas Tufton 6th Earl of Thanet (age 73) and Catherine Cavendish Countess Isle Thanet. He the son of Henry Grey 1st Duke Kent (age 47) and Jemima Crew Marchioness Kent (age 43).

Before 30 Oct 1724 [her son-in-law] John Ashburnham 1st Earl Ashburnham (age 37) and [her daughter] Jemima Grey Countess Ashburham (age 25) were married. She by marriage Baroness Ashburnham of Ashburnham in Sussex. She the daughter of Henry Grey 1st Duke Kent (age 53) and Jemima Crew Marchioness Kent (age 49).

On 09 Jan 1727 [her son-in-law] Charles Cavendish (age 22) and [her daughter] Anne Grey were married. She the daughter of Henry Grey 1st Duke Kent (age 56) and Jemima Crew Marchioness Kent (age 52). He the son of William Cavendish 2nd Duke Devonshire (age 55) and Rachel Russell Duchess Devonshire.

On 24 Mar 1729 [her former husband] Henry Grey 1st Duke Kent (age 58) and Sophia Bentinck Duchess Kent (age 27) were married. She by marriage Duchess Kent. The difference in their ages was 30 years. She the daughter of William Bentinck 1st Earl of Portland and Jane Martha Temple Countess Portland (age 57). He the son of Anthony Grey 1453 1490 11th Earl Kent and Mary Lucas Countess Kent.