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.

Before Apr 1475 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.

In or before 1542 John Stewart 3rd Earl Atholl (age 35) and Grizzell Ratray Countess Atholl were married. She by marriage Countess Atholl. He the son of John Stewart 2nd Earl Atholl and Janet Campbell Countess Atholl. He a great x 4 grandson of King Edward III of England.

Before 1549 John Stewart 4th Earl Atholl and Elizabeth Gordon Countess Atholl were married. She by marriage Countess Atholl. She the daughter of George Gordon 4th Earl Huntley (age 34). He the son of John Stewart 3rd Earl Atholl and Grizzell Ratray Countess Atholl. They were second cousin once removed. He a great x 5 grandson of King Edward III of England.

In 1549 John Stewart 4th Earl Atholl and Margaret Fleming Countess Atholl (age 20) were married. She by marriage Countess Atholl. He the son of John Stewart 3rd Earl Atholl and Grizzell Ratray Countess Atholl. They were third cousins. He a great x 5 grandson of King Edward III of England. She a great x 5 granddaughter of King Edward III of England.