- Father: John Sir Knight Templar 2nd Laird of SETON
- Mother: Katherine ST. CLAIR
- Birth: 1390, Seton, East Lothian, Scotland
- Alt. Birth: 1390, Prestonpans, East Lothian, Scotland
- Alt. Death: 17 Aug 1424, Verneuil, Haute-Vienne, Limousin, France
- Death: 17 Aug 1424, Berneuil, Haute-Vienne, Limousin, France
- Partnership with: (Unknown)
Ancestors of Sir William 3rd Baron of SETON
/-Alan De Wyntown OR WINTON
/-Sir Knight William 1st Laird of SETON
| \-Margaret Baroness of SETON
/-John Sir Knight Templar 2nd Laird of SETON
| | /-Sir David FLEMING
| \-Janet Or Jonet Baroness of Seton FLEMING
| \-Jean BARCLAY
Sir William 3rd Baron of SETON
\-Katherine ST. CLAIR
Descendants of Sir William 3rd Baron of SETON
1 Sir William 3rd Baron of SETON
=(Unknown)
2 George 3rd Lord SETON
=Margaret STEWART
3 John Master of SETON
=Christian LINDSAY
3 Christian SETON
=Hugh Douglas of COREHEAD
=UNK Concubine of George 3rd Lord SETON
3 UNK Illeg. Son SETON
=(Unknown)
Ancestors of Thomas SETON
/-Sir Christopher SETON
/-Sir Alexander SETON
| \-Christina De Brus BRUCE
/-Sir Alexander Captain of Berwick Castle SETON
| | /-Duncan 10th Earl of FIFE
| \-Isabel of FIFE
Thomas SETON
\-Christian Chayne of STRALOCH
Descendants of UNK Concubine of George 3rd Lord SETON
1 UNK Concubine of George 3rd Lord SETON
=George 3rd Lord SETON
2 UNK Illeg. Son SETON
=(Unknown)
3 John SETON
=(Unknown)
Ancestors of UNK Daughter SETON
/-George 3rd Lord SETON
/-John Master of SETON
| \-Margaret STEWART
/-George 4th Lord SETON
| | /-UNK 1st Lord Lindsay of BYRES
| \-Christian LINDSAY
UNK Daughter SETON
| /-Colin I of ARGYLL
\-Lady Margaret CAMPBELL
Ancestors of UNK Daughter SETON
/-George 3rd Lord SETON
/-John Master of SETON
| \-Margaret STEWART
/-George 4th Lord SETON
| | /-UNK 1st Lord Lindsay of BYRES
| \-Christian LINDSAY
UNK Daughter SETON
| /-Colin I of ARGYLL
\-Lady Margaret CAMPBELL
Ancestors of UNK Daughter of SETON
/-Alexander Setoune of SETON
/-Bertrand Or BertramBartine of SETON
| \-Jean Barclay Or BERKELEY
/-Adam Setoune of SETON
| | /-William Earl of BUCHAN
| \-Margaret COMYN
UNK Daughter of SETON
| /-Hugh Lord YESTER
\-Margaret GIFFORD
Descendants of UNK Daughter of SETON
1 UNK Daughter of SETON
=Sir William KEITH
Ancestors of UNK Daughter of SETON
/-Lambert Ii Count of Lens of BOULOGNE
/-Seier De Lens of SETON
| \-UNK Mrs. Lambert de Lens of BOULOGNE
/-Walter De Lens Le Fleming of SETON
UNK Daughter of SETON
\-Jonet DE QUINCY
Ancestors of UNK Daughter of SETON
/-Lambert Ii Count of Lens of BOULOGNE
/-Seier De Lens of SETON
| \-UNK Mrs. Lambert de Lens of BOULOGNE
/-Walter De Lens Le Fleming of SETON
UNK Daughter of SETON
\-Jonet DE QUINCY
- Partnership with: (Unknown)
Ancestors of UNK Illeg. Son SETON
/-John Sir Knight Templar 2nd Laird of SETON
/-Sir William 3rd Baron of SETON
| \-Katherine ST. CLAIR
/-George 3rd Lord SETON
UNK Illeg. Son SETON
\-UNK Concubine of George 3rd Lord SETON
Descendants of UNK Illeg. Son SETON
1 UNK Illeg. Son SETON
=(Unknown)
2 John SETON
=(Unknown)
3 Father Thomas SETON
Ancestors of UNK Son SETON
/-Sir Christopher SETON
/-Sir Alexander SETON
| \-Christina De Brus BRUCE
/-Sir Alexander Captain of Berwick Castle SETON
| | /-Duncan 10th Earl of FIFE
| \-Isabel of FIFE
UNK Son SETON
\-Christian Chayne of STRALOCH
Ancestors of UNK Son SETON
/-John Master of SETON
/-George 4th Lord SETON
| \-Christian LINDSAY
/-George 5th Lord SETON
| | /-Colin I of ARGYLL
| \-Lady Margaret CAMPBELL
UNK Son SETON
| /-Patrick 1st Earl of BOTHWELL
\-Lady Janet HEPBURN
Ancestors of UNK Son SETON
/-John Master of SETON
/-George 4th Lord SETON
| \-Christian LINDSAY
/-George 5th Lord SETON
| | /-Colin I of ARGYLL
| \-Lady Margaret CAMPBELL
UNK Son SETON
| /-Patrick 1st Earl of BOTHWELL
\-Lady Janet HEPBURN
Ancestors of UNK Son SETON
/-George 4th Lord SETON
/-George 5th Lord SETON
| \-Lady Margaret CAMPBELL
/-George 6th Lord SETON
| | /-Patrick 1st Earl of BOTHWELL
| \-Lady Janet HEPBURN
UNK Son SETON
\-Lady Mary Pyeris of FRANCE
Ancestors of UNK Son SETON
/-George 4th Lord SETON
/-George 5th Lord SETON
| \-Lady Margaret CAMPBELL
/-George 6th Lord SETON
| | /-Patrick 1st Earl of BOTHWELL
| \-Lady Janet HEPBURN
UNK Son SETON
\-Lady Mary Pyeris of FRANCE
Ancestors of UNK Son SETON
/-Robert 1st Earl of Winton 8th Lord SETON
/-George 10th lord Seton and 3rd Earl of Winton SETON
| \-Lady Margaret MONTGOMERIE
/-George Master of SETON
| \-Lady Ann HAY
UNK Son SETON
| /-UNK Marquess HUNTLY
\-Lady Henrietta GORDON
Ancestors of UNK Son SETON
/-Robert 1st Earl of Winton 8th Lord SETON
/-George 10th lord Seton and 3rd Earl of Winton SETON
| \-Lady Margaret MONTGOMERIE
/-George Master of SETON
| \-Lady Ann HAY
UNK Son SETON
| /-UNK Marquess HUNTLY
\-Lady Henrietta GORDON
Ancestors of UNK Son SETON
/-Robert 1st Earl of Winton 8th Lord SETON
/-George 10th lord Seton and 3rd Earl of Winton SETON
| \-Lady Margaret MONTGOMERIE
/-George Master of SETON
| \-Lady Ann HAY
UNK Son SETON
| /-UNK Marquess HUNTLY
\-Lady Henrietta GORDON
Ancestors of Walter De Lens Le Fleming of SETON
/-Eustace I of BOULOGNE
/-Lambert Ii Count of Lens of BOULOGNE
/-Seier De Lens of SETON
| \-UNK Mrs. Lambert de Lens of BOULOGNE
Walter De Lens Le Fleming of SETON
Descendants of Walter De Lens Le Fleming of SETON
1 Walter De Lens Le Fleming of SETON
=Jonet DE QUINCY Marriage: Abt 1106
2 Seier Or Seher of SETON
=(Unknown)
3 Philip of SETON
=Helen Or Alice MARCH
2 Walter Or Dougal of SETON
2 UNK Daughter of SETON
2 UNK Daughter of SETON
Ancestors of Walter Or Dougal of SETON
/-Lambert Ii Count of Lens of BOULOGNE
/-Seier De Lens of SETON
| \-UNK Mrs. Lambert de Lens of BOULOGNE
/-Walter De Lens Le Fleming of SETON
Walter Or Dougal of SETON
\-Jonet DE QUINCY
Ancestors of William SETON
/-Alan De Wyntown OR WINTON
/-Sir Knight William 1st Laird of SETON
| \-Margaret Baroness of SETON
/-Alexander de Seton 1st Lord of GORDON
| | /-Sir David FLEMING
| \-Janet Or Jonet Baroness of Seton FLEMING
| \-Jean BARCLAY
William SETON
| /-Adam John 9th Laird of Clan GORDON
| /-Sir Adam Baron of GORDON
| | \-Elizabeth Baroness of Gordon Keith of SOMERVILLE
\-Elizabeth Seton Heiress of GORDON
| /-Sir William Marischal de KEITH
\-Elizabeth Lady Aboyne de KEITH
\-Lady Margaret FRASER
Descendants of William SETON
1 William SETON
=Elizabeth Heiress of MELDRUM