On 17 Dec 1657 [his father] John Campbell 1st Earl Breadalbaine and Holland (age 21) and [his mother] Mary Rich (age 21) were married. She the daughter of Henry Rich 1st Earl Holland and Isabel Cope Countess Holland.

In 1678 [his father] John Campbell 1st Earl Breadalbaine and Holland (age 41) and Mary Campbell Countess Breadalbaine and Holland were married. She the daughter of Archibald Campbell 1st Marquess Argyll and Margaret Douglas Marchioness Argyll (age 68).

In 1685 John Campbell 2nd Earl Breadalbaine and Holland (age 22) and Frances Cavendish (age 24) were married. She the daughter of Henry Cavendish 2nd Duke Newcastle upon Tyne (age 54) and Frances Pierrepont Duchess Newcastle upon Tyne (age 54). He the son of John Campbell 1st Earl Breadalbaine and Holland (age 48) and Mary Rich.

In Feb 1695 Charles Spencer 3rd Earl of Sunderland (age 19) and [his former sister-in-law] Arabella Cavendish (age 21) were married. She the daughter of Henry Cavendish 2nd Duke Newcastle upon Tyne and Frances Pierrepont Duchess Newcastle upon Tyne (age 64). He the son of Robert Spencer 2nd Earl of Sunderland (age 53) and Anne Digby Countess Sunderland (age 49).

On 23 May 1695 John Campbell 2nd Earl Breadalbaine and Holland (age 32) and Henrietta Villiers Countess Breadalbaine and Holland were married. He the son of John Campbell 1st Earl Breadalbaine and Holland (age 58) and Mary Rich.

On 20 Feb 1717 [his son] John Campbell 3rd Earl Breadalbaine and Holland (age 20) and [his daughter-in-law] 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 23 Jan 1730 [his son] John Campbell 3rd Earl Breadalbaine and Holland (age 33) and [his daughter-in-law] Arbella Pershall Countess Breadalbaine and Holland were married. He the son of John Campbell 2nd Earl Breadalbaine and Holland (age 67) and Henrietta Villiers Countess Breadalbaine and Holland.

John Berkeley 4th Viscount Fitzhardinge and Barbara Villiers Viscountess Fitzhardinge were married.