On or after 14 Oct 1551 [his father] Colin Campbell 6th Earl Argyll (age 7) and Joan Stewart Countess Argyll were married. He the son of Archibald Campbell 4th Earl Argyll (age 44) and Margaret Graham Countess Argyll. They were second cousins. She a great x 5 granddaughter of King Edward III of England.

On 08 Feb 1562 James Stewart 1st Earl Moray Regent (age 31) and [his mother] Agnes Keith Countess Moray and Argyll (age 31) were married at Holyrood. She by marriage Countess Moray. She the daughter of William Keith 4th Earl Marischal (age 55) and Margaret Keith Countess Marischal. He the illegitmate son of King James V of Scotland and Margaret Erskine (age 46). They were fourth cousins. He a great grandson of King Henry VII of England and Ireland.

Between 13 Jan 1571 and 26 Feb 1572 [his father] Colin Campbell 6th Earl Argyll (age 28) and [his mother] Agnes Keith Countess Moray and Argyll (age 40) were married. She by marriage Countess Argyll. She the daughter of William Keith 4th Earl Marischal (age 64) and Margaret Keith Countess Marischal. He the son of Archibald Campbell 4th Earl Argyll and Margaret Graham Countess Argyll. They were half fourth cousins.

On 24 Jul 1592 Archibald Campbell 7th Earl Argyll (age 17) and Agnes Douglas Countess Argyll (age 18) were married. She the daughter of William Douglas 6th Earl Morton (age 52) and Agnes Leslie Countess Morton (age 50). He the son of Colin Campbell 6th Earl Argyll and Agnes Keith Countess Moray and Argyll. They were third cousins.

In 1596 William Sandys and [his future sister-in-law] Elizabeth Cornwallis Viscountess Lumley (age 6) were married.

On 22 Nov 1596 William Sandys (age 21) and [his future sister-in-law] Elizabeth Cornwallis (age 6) were married. There was no issue from the marriage.

In 1609 Archibald Campbell 7th Earl Argyll (age 34) and Anne Cornwallis Countess Argyll (age 19) were married. She by marriage Countess Argyll. He the son of Colin Campbell 6th Earl Argyll and Agnes Keith Countess Moray and Argyll.

Before 06 Nov 1619 Edmond Withipoll and [his sister-in-law] Frances Cornwallis (age 29) were married.

Before 1624 [his son-in-law] George Gordon 2nd Marquess Huntly (age 32) and [his daughter] Anna Campbell Marchioness Huntly were married. She by marriage Marchioness Huntly. She the daughter of Archibald Campbell 7th Earl Argyll (age 48) and Agnes Douglas Countess Argyll. He the son of George Gordon 1st Marquess Huntly (age 61) and Henrietta Stewart Marchioness Huntly (age 50). They were fourth cousins.

In 1626 [his son] Archibald Campbell 1st Marquess Argyll (age 18) and [his daughter-in-law] Margaret Douglas Marchioness Argyll (age 16) were married. She the daughter of William Douglas 7th Earl Morton (age 44) and Anne Keith Countess Morton. He the son of Archibald Campbell 7th Earl Argyll (age 51) and Agnes Douglas Countess Argyll. They were first cousin once removed.

On 11 May 1630 Richard Lumley 1st Viscount Lumley (age 41) and [his sister-in-law] Elizabeth Cornwallis Viscountess Lumley (age 40) were married. He a great x 3 grandson of King Edward IV of England.

In Jan 1631 [his brother-in-law] Frederick Cornwallis 1st Baron Cornwallis (age 19) and Elizabeth Ashburnham (age 18) were married. After the wedding King Charles I (age 30), Henrietta Maria (age 21) and Susan Feilding, Countess of Denbigh (age 48) wrote to congratulate his mother Jane, Baroness Cornwallis Bacon (age 50), and ask her to forgive him for his disobedience and return him to her favour. Denbigh said Ashburnham was her cousin "though her family be unfortunate".

George Douglas and Margaret Forrester were married. He the son of William Douglas 6th Earl Morton and Agnes Leslie Countess Morton.