Around 1424 [her father] Archibald Douglas 2nd Duke Touraine (age 34) and [her mother] Euphemia Graham Lady Hamilton (age 16) were married. She by marriage Duchess Touraine, Countess Wigtown. She the daughter of Patrick Graham and Eupheme Stewart 2nd Countess of Strathearn and Caithness. He the son of Archibald Douglas 1st Duke Touraine (age 52) and Margaret Stewart Duchess Touraine. They were half second cousins.

After 25 Feb 1440 [her step-father] James Hamilton 1st Lord Hamilton (age 25) and [her mother] Euphemia Graham Lady Hamilton (age 32) were married. She the daughter of Patrick Graham and Eupheme Stewart 2nd Countess of Strathearn and Caithness.

Before 22 Feb 1452 William Douglas 8th Earl Douglas 2nd Earl Avondale (age 27) and Margaret "Fair Lady of Galloway" Douglas Countess (age 17) were married. She would later marry his younger brother James Douglas 9th Earl Douglas 3rd Earl Avondale (age 26); an example of Married to Two Siblings. She the daughter of Archibald Douglas 2nd Duke Touraine and Euphemia Graham Lady Hamilton (age 44). He the son of James "Gross" Douglas 7th Earl Douglas 1st Earl Avondale and Beatrix Sinclair Countess Douglas and Avondale (age 54). They were first cousin once removed.

Before 1455 James Douglas 9th Earl Douglas 3rd Earl Avondale (age 29) and Margaret "Fair Lady of Galloway" Douglas Countess (age 19) were married. She by marriage Countess Douglas, Countess Avondale. She had previously married his brother William Douglas 8th Earl Douglas 2nd Earl Avondale; an example of Married to Two Siblings. She the daughter of Archibald Douglas 2nd Duke Touraine and Euphemia Graham Lady Hamilton (age 46). He the son of James "Gross" Douglas 7th Earl Douglas 1st Earl Avondale and Beatrix Sinclair Countess Douglas and Avondale (age 56). They were first cousin once removed.

Around 1459 John Stewart 1st Earl Atholl (age 19) and Margaret "Fair Lady of Galloway" Douglas Countess (age 24) were married. She by marriage Countess Atholl. She the daughter of Archibald Douglas 2nd Duke Touraine and Euphemia Graham Lady Hamilton (age 51). He the son of James "Black Knight of Lorn" Stewart and Joan Beaufort Queen Consort Scotland. He a great x 2 grandson of King Edward III of England.

After 1463 [her husband] James Douglas 9th Earl Douglas 3rd Earl Avondale (age 37) and Anne Holland Countess Douglas and Avondale were married. She by marriage Countess Douglas, Countess Avondale. She the daughter of John Holland 2nd Duke Exeter and Anne Stafford Duchess Exeter. He the son of James "Gross" Douglas 7th Earl Douglas 1st Earl Avondale and Beatrix Sinclair Countess Douglas and Avondale. She a great x 2 granddaughter of King Edward III of England.

Before Apr 1475 [her former husband] John Stewart 1st Earl Atholl (age 35) and Eleanor Sinclair Countess Atholl (age 18) were married. She by marriage Countess Atholl. She the daughter of William Sinclair 3rd Earl Orkney 1st Earl Caithness (age 65) and Marjory Sutherland Countess Orkney and Caithness. He the son of James "Black Knight of Lorn" Stewart and Joan Beaufort Queen Consort Scotland. He a great x 2 grandson of King Edward III of England.