In 1760 [his father] John Savile 1st Earl Mexborough (age 40) and [his mother] Sarah Delaval Countess Mexborough (age 18) were married. She by marriage Baroness Pollington of Longford in the County of Longford. The difference in their ages was 22 years.

In 1782 John Savile 2nd Earl Mexborough (age 20) and Elizabeth Stephenson Countess Mexborough (age 20) were married. She by marriage Countess Mexborough of Lifford in County Donegal. He the son of John Savile 1st Earl Mexborough and Sarah Delaval Countess Mexborough (age 40).

In 1807 [his son] John Savile 3rd Earl Mexborough (age 23) and [his daughter-in-law] Anne Yorke Countess Mexborough (age 24) were married. She the daughter of Philip Yorke 3rd Earl of Hardwicke (age 49) and Elizabeth Lindsay Countess Hardwicke (age 43). He the son of John Savile 2nd Earl Mexborough (age 45) and Elizabeth Stephenson Countess Mexborough (age 45).

Before 03 Feb 1809 [his son-in-law] John George Monson 4th Baron Monson (age 24) and [his daughter] Sarah Elizabeth Savile Countess Warwick (age 22) were married. She the daughter of John Savile 2nd Earl Mexborough (age 47) and Elizabeth Stephenson Countess Mexborough (age 47).

In 1816 [his son-in-law] Henry Greville 3rd Earl Warwick 3rd Earl Brooke Warwick Castle (age 36) and [his daughter] Sarah Elizabeth Savile Countess Warwick (age 29) were married. She by marriage Countess Warwick. She the daughter of John Savile 2nd Earl Mexborough (age 54) and Elizabeth Stephenson Countess Mexborough (age 54). He the son of George Greville 2nd Earl Warwick and Brooke (age 69) and Henrietta Vernon Countess Warwick and Brooke (age 55).