In 1577 James Sinclair Master of Sinclair and [his future sister-in-law] Isabel Leslie were married. She the daughter of Andrew Leslie 5th Earl Rothes (age 36) and Grizel Hamilton Countess Rothes.

In or before 1595 [his father] Walter Ogilvy 1st Lord Ogilvy of Deskford (age 35) and [his mother] Mary Douglas were married. She the daughter of William Douglas 6th Earl Morton (age 54) and Agnes Leslie Countess Morton (age 52).

On 17 Feb 1610 James Ogilvy 1st Earl Findlater (age 15) and Elizabeth Leslie were married. She the daughter of Andrew Leslie 5th Earl Rothes (age 69). They were first cousin once removed.

After 17 Feb 1610 James Ogilvy 1st Earl Findlater (age 15) and Marion Cunningham were married. She the daughter of William Cunningham 8th Earl Glencairn (age 35) and Jean Kerr Countess Glencairn. They were half second cousin once removed.

On 05 Apr 1637 [his son-in-law] William Cunningham 9th Earl Glencairn (age 27) and [his daughter] Anne Ogilvy Countess Glancairn were married. She by marriage Countess Glencairn. She the daughter of James Ogilvy 1st Earl Findlater (age 42) and Elizabeth Leslie. He the son of William Cunningham 8th Earl Glencairn and Jean Kerr Countess Glencairn. They were half second cousin once removed.