Paternal Family Tree: Hay of Locherworth
Maternal Family Tree: Agnes Leslie Countess Morton 1542-
Before 1645 [his father] John Hay 1st Marquess Tweeddale [aged 19] and [his mother] Jean Scott Marchioness Tweddale were married. She the daughter of [his grandfather] Walter Scott 1st Earl Buccleuch and [his grandmother] Mary Hay Countess Buccleuch. He the son of John Hay 1st Earl Tweeddale [aged 51] and Jean Seton. They were half third cousin once removed.
In 1645 John Hay 2nd Marquess Tweeddale was born to John Hay 1st Marquess Tweeddale [aged 19] and Jean Scott Marchioness Tweddale.
On 25th May 1653 [his grandfather] John Hay 1st Earl Tweeddale [aged 60] died. His son [his father] John [aged 27] succeeded 2nd Earl Tweeddale. [his mother] Jean Scott Marchioness Tweddale by marriage Countess Tweeddale.
In 1666 John Hay 2nd Marquess Tweeddale [aged 21] was elected Fellow of the Royal Society.
In 1666 John Hay 2nd Marquess Tweeddale [aged 21] and Mary Maitland Marchioness Tweddale were married. She the daughter of John Maitland 1st Duke Lauderdale [aged 49] and Anne Home [aged 54]. He the son of John Hay 1st Marquess Tweeddale [aged 40] and Jean Scott Marchioness Tweddale.
After 1668 [his son] Brigadier-General William Hay was born to John Hay 2nd Marquess Tweeddale [aged 23] and [his wife] Mary Maitland Marchioness Tweddale.
In 1670 [his son] Charles Hay 3rd Marquess Tweeddale was born to John Hay 2nd Marquess Tweeddale [aged 25] and [his wife] Mary Maitland Marchioness Tweddale.
On 10th October 1675 [his brother-in-law] Robert Ker 3rd Earl Roxburghe [aged 17] and [his sister] Margaret Hay Countess Roxburghe were married. She by marriage Countess Roxburghe. She the daughter of [his father] John Hay 1st Marquess Tweeddale [aged 50] and [his mother] Jean Scott Marchioness Tweddale. He the son of William Ker 2nd Earl Roxburghe and Jane Ker Countess Roxburgh. They were second cousin once removed.
Before 1681 Gilbert Soest [aged 75]. Portrait of John Hay 2nd Marquess Tweeddale [aged 35].
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In 1694 [his father] John Hay 1st Marquess Tweeddale [aged 68] was created 1st Marquess Tweeddale. [his mother] Jean Scott Marchioness Tweddale by marriage Marchioness Tweeddale.
Before 1st August 1696 [his brother-in-law] William Douglas 1st Earl March [aged 26] and [his sister] Jean Hay Countess March were married. She the daughter of [his father] John Hay 1st Marquess Tweeddale [aged 70] and [his mother] Jean Scott Marchioness Tweddale. He the son of William Douglas 1st Duke Queensberry and Isabel Douglas Countess Queensberry. They were fourth cousins.
In 1697 [his brother-in-law] William Douglas 1st Earl March [aged 26] was created 1st Earl March. [his sister] Jean Hay Countess March by marriage Countess March.
On 29th April 1697 [his son-in-law] John Hamilton-Leslie 9th Earl of Rothes [aged 18] and Jean Hay were married. She the daughter of John Hay 2nd Marquess Tweeddale [aged 52] and Mary Maitland Marchioness Tweddale. He the son of Charles Hamilton 5th Earl Haddington and Margaret Leslie 8th Countess Rothes and Haddington. They were half third cousin once removed.
On 11th August 1697 [his father] John Hay 1st Marquess Tweeddale [aged 71] died at Edinburgh. His son John [aged 52] succeeded 2nd Marquess Tweeddale, 3rd Earl Tweeddale. [his wife] Mary Maitland Marchioness Tweddale by marriage Marchioness Tweeddale.
On 20th April 1713 John Hay 2nd Marquess Tweeddale [aged 68] died. His son Charles [aged 43] succeeded 3rd Marquess Tweeddale, 4th Earl Tweeddale.
[his daughter] Jean Hay was born to John Hay 2nd Marquess Tweeddale and Mary Maitland Marchioness Tweddale. She married 29th April 1697 her half third cousin once removed John Hamilton-Leslie 9th Earl of Rothes, son of Charles Hamilton 5th Earl Haddington and Margaret Leslie 8th Countess Rothes and Haddington, and had issue.
Kings Wessex: Great x 18 Grand Son of King Edmund "Ironside" I of England
Kings Gwynedd: Great x 15 Grand Son of Owain "Great" King Gwynedd
Kings Seisyllwg: Great x 21 Grand Son of Hywel "Dda aka Good" King Seisyllwg King Deheubarth
Kings Powys: Great x 16 Grand Son of Maredudd ap Bleddyn King Powys
Kings Godwinson: Great x 19 Grand Son of King Harold II of England
Kings England: Great x 9 Grand Son of King Edward III of England
Kings Scotland: Great x 7 Grand Son of King James I of Scotland
Kings France: Great x 11 Grand Son of King Philip IV of France
Kings Duke Aquitaine: Great x 23 Grand Son of Ranulf I Duke Aquitaine
Kings Spain: Great x 15 Grand Son of Alfonso VII King Castile VII King Leon
Great x 4 Grandfather: John Hay 3rd Lord Hay 
3 x Great Grandson of King Robert III of Scotland
Great x 3 Grandfather: John Hay 4th Lord Hay 4 x Great Grandson of King Robert III of Scotland
Great x 4 Grandmother: Elizabeth Douglas Lady Hay 
4 x Great Granddaughter of King Robert III of Scotland
Great x 2 Grandfather: William Hay 5th Lord Hay 5 x Great Grandson of King Robert III of Scotland
Great x 1 Grandfather: James Hay 6 x Great Grandson of King Robert III of Scotland
Great x 4 Grandfather: Andrew Kerr of Ferniehirst
Great x 3 Grandfather: John Kerr 10th of Ferniehirst
Great x 2 Grandmother: Margaret Kerr 6 x Great Granddaughter of King Robert III of Scotland
Great x 4 Grandfather: Andrew Kerr of Cessford 4 x Great Grandson of King Robert III of Scotland
Great x 3 Grandmother: Catherine Ker 5 x Great Granddaughter of King Robert III of Scotland
Great x 4 Grandmother: Agnes Crichton 5 x Great Granddaughter of King Robert II of Scotland
Grandfather: John Hay 1st Earl Tweeddale 7 x Great Grandson of King Robert III of Scotland
father: John Hay 1st Marquess Tweeddale 6 x Great Grandson of King James I of Scotland
Great x 4 Grandfather: George Seton 5th Lord Seton 4 x Great Grandson of King Robert II of Scotland
Great x 3 Grandfather: George Seton 6th Lord Seton 2 x Great Grandson of King James I of Scotland
Great x 4 Grandmother: Joanna Hepburn Lady Seton Great Granddaughter of King James I of Scotland
Great x 2 Grandfather: George Seton 7th Lord Seton 3 x Great Grandson of King James I of Scotland
Great x 4 Grandfather: John Hay 3rd Lord Hay 3 x Great Grandson of King Robert III of Scotland
Great x 3 Grandmother: Elizabeth Hay Lady Seton 4 x Great Granddaughter of King Robert III of Scotland
Great x 4 Grandmother: Elizabeth Douglas Lady Hay 4 x Great Granddaughter of King Robert III of Scotland
Great x 1 Grandfather: Alexander Seton 1st Earl Dunfermline 4 x Great Grandson of King James I of Scotland
Great x 4 Grandfather: William Hamilton of Sandquhar
Great x 3 Grandfather: William Hamilton 4 x Great Grandson of King Robert III of Scotland
Great x 4 Grandmother: Catherine Kennedy 3 x Great Granddaughter of King Robert III of Scotland
Great x 2 Grandmother: Isobel Hamilton Lady Seton 5 x Great Granddaughter of King Robert III of Scotland
Grandmother: Jean Seton 5 x Great Granddaughter of King James I of Scotland
Great x 4 Grandfather: George Leslie 4th Earl Rothes 
Great x 3 Grandfather: Andrew Leslie 5th Earl Rothes
Great x 2 Grandfather: James Leslie Master of Rothes
Great x 1 Grandmother: Grizel Leslie Countess Dunfermline 7 x Great Granddaughter of King Robert II of Scotland
Great x 4 Grandfather: John Lindsay 5th Lord Lindsay of the Byres 4 x Great Grandson of King Robert II of Scotland
Great x 3 Grandfather: Patrick Lindsay 6th Lord Lindsay of the Byres 5 x Great Grandson of King Robert II of Scotland
Great x 4 Grandmother: Helen Stewart 
4 x Great Granddaughter of King Robert II of Scotland
Great x 2 Grandmother: Margaret Lindsay 6 x Great Granddaughter of King Robert II of Scotland
John Hay 2nd Marquess Tweeddale 7 x Great Grandson of King James I of Scotland
Great x 1 Grandfather: Walter "Bold Buccleuch" Scott 
Grandfather: Walter Scott 1st Earl Buccleuch 8 x Great Grandson of King Robert III of Scotland
Great x 4 Grandfather: Andrew Kerr of Cessford 4 x Great Grandson of King Robert III of Scotland
Great x 3 Grandfather: Walter Kerr of Cessford 5 x Great Grandson of King Robert III of Scotland
Great x 4 Grandmother: Agnes Crichton 5 x Great Granddaughter of King Robert II of Scotland
Great x 2 Grandfather: William Kerr of Cessford 6 x Great Grandson of King Robert III of Scotland
Great x 1 Grandmother: Mary Kerr 7 x Great Granddaughter of King Robert III of Scotland
mother: Jean Scott Marchioness Tweddale 6 x Great Granddaughter of King James I of Scotland
Great x 4 Grandfather: Thomas Hay Great Grandson of King James I of Scotland
Great x 3 Grandfather: George Hay 7th Earl Erroll 2 x Great Grandson of King James I of Scotland
Great x 4 Grandmother: Margaret Logie
Great x 2 Grandfather: Andrew Hay 8th Earl Erroll 3 x Great Grandson of King James I of Scotland
Great x 4 Grandfather: Alexander Robertson
Great x 3 Grandmother: Margaret Robertson Countess Erroll
Great x 1 Grandfather: Francis Hay 9th Earl Erroll 4 x Great Grandson of King James I of Scotland
Great x 4 Grandfather: William Hay 5th Earl Erroll 2 x Great Grandson of King James I of Scotland
Great x 3 Grandfather: William Hay 6th Earl Erroll 3 x Great Grandson of King James I of Scotland
Great x 4 Grandmother: Elizabeth Ruthven Countess Erroll 12 x Great Granddaughter of King John of England
Great x 2 Grandmother: Jean Hay 3 x Great Granddaughter of King James II of Scotland
Great x 4 Grandfather: John Stewart 3rd Earl Lennox Great Grandson of King James II of Scotland
Great x 3 Grandmother: Helen or Eleanor Stewart Countess Erroll and Sutherland 2 x Great Granddaughter of King James II of Scotland
Great x 4 Grandmother: Isabel or Elizabeth Stewart Countess Lennox 3 x Great Granddaughter of King Robert II of Scotland
Grandmother: Mary Hay Countess Buccleuch 5 x Great Granddaughter of King James I of Scotland
Great x 4 Grandfather: Thomas Douglas 11 x Great Grandson of King David I of Scotland
Great x 3 Grandfather: Robert Douglas 12 x Great Grandson of King David I of Scotland
Great x 4 Grandmother: Elizabeth Boyd
Great x 2 Grandfather: William Douglas 6th Earl Morton 6 x Great Grandson of King Robert II of Scotland
Great x 4 Grandfather: John Erskine 17th Earl of Mar 4 x Great Grandson of King Robert II of Scotland
Great x 3 Grandmother: Margaret Erskine 5 x Great Granddaughter of King Robert II of Scotland
Great x 4 Grandmother: Margaret Campbell Countess Mar 4 x Great Granddaughter of King Robert II of Scotland
Great x 1 Grandmother: Elizabeth Douglas Countess Erroll 7 x Great Granddaughter of King Robert II of Scotland
Great x 3 Grandfather: George Leslie 4th Earl Rothes
Great x 2 Grandmother: Agnes Leslie Countess Morton