Sir William de Seton, 1st Lord Seton

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William Alexander de Seton (de Winton), Knight

Also Known As: "William of Seton", "William de Winton", "William de Wyntoun"
Birthdate: (81)
Birthplace: Seton, East Lothian, Scotland
Death: Died in Braize, Allier, Auvergne, France
Immediate Family:

Son of Sir Alan de Wyntoun, of Seton and Margaret de Seton, heiress of Seton
Husband of Lady Janet Baroness of Seton
Father of Sir John Seton, 2nd Lord Seton; Anna Hamilton; Alexander Seton, Lord Gordon and Janet Dunbar
Brother of Alexander Seton of Winton; Lady Christian Seton, Countess of Dunbar & March and Henry Wyntoun

Managed by: Joanna Helen Roper
Last Updated:

About Sir William de Seton, 1st Lord Seton The direct male Gordon line ended with Sir Adam's great‐grandson and name sake, who  fell at the battle of Homildon Hill in 1402, leaving a daughter Elizabeth, who married  Alexander Seton, second son of Sir W. Seton of Winton. Her son Alexander assumed the  name of Gordon,  and was  created  Earl of Huntly  in 1449


Seton and Winton lineages and theories Alexander Seton was the son of Catharine St. Clair, daughter of Sir William St. Clair of Herdmandston, and Sir William Winton, who assumed the Seton surname; thereby William (Winton) Seton. William and Catherine had two sons and six daughters. The eldest was John and he took his father’s Seton surname and the younger aforementioned Alexander Seton who married Elizabeth de Gordon in 1408 and assumed her Gordon surname. Sir William was killed at the Battle of Chevy Chase in 1388 (Seaton 1906. pp. 57). Sir William Winton-Seton was the son of Lady Margaret Seton, the only child of Sir Alexander Seton and Margaret Murray, and Baron Alan de Winton (born about 1315, Wintoun Castle, Pencaitland, East Lothian, Scotland). Around 1347 Lady Margaret Seton was abducted by Baron Sir Alan de Winton, who lived nearby and was possibly distantly related to Lady Margaret. Tradition of several descending families dictates that the Wintons were cadets of the Seton family, who built Wintoun Castle.


  • *******Sir William Seton of that Ilk, of Winton, and Tranent in East Lothian, and of Winchburgh,

West Lothian, had by his wife, Katherine, daughter of Sir William Sinclair of Herdmanstoun, two sons. The elder, Sir John Seton of that Ilk, was ancestor of the Earls of Winton, attainted 464 Appendix. 1716, of tlie Earls of Dunfermline, Lords of F3 r vie and Urquhart, attainted 1690, and of the Viscounts Kingston, attainted 1715. The second son was the ancestor of the Setons of Strath- bogie and of the Garioch (p. 112). Sir Alexander Seton married, circa 1408, Elizabeth de Gordon, heiress of Gordon, and became Lord Gordon, and their sons were Alexander, first Earl of Huntly ; William, first Seton of Meldruni ; and Henry, killed along with his brother William in the battle of Brechin (1452).

Not to be confused with his grandson William Steon who died in 8/17/1424

Sir William de Seton1

M, #29829, d. circa March 1409/10

Sir William de Seton|d. c Mar 1409/10|p2983.htm#i29829|Alan de Wyntoun||p26263.htm#i262622|Margaret de Seton||p26256.htm#i262558|||||||unknown de Seton||p26262.htm#i262619||||

Last Edited=29 Apr 2008

    Sir William de Seton was the son of Alan de Wyntoun and Margaret de Seton.1 He married Janet Fleming, daughter of Sir David Fleming.1 He died circa March 1409/10.1
    Sir William de Seton gained the title of Lord of Seton [feudal baron].1 Circa 1367 he granted the lands of Wester Fausyde to his esquire John de Fausyde.1

Children of Sir William de Seton and Janet Fleming

Sir Alexander Seton+ d. bt 31 Aug 1440 - 3 Apr 1441

Sir John Seton of Seton+ d. c 1434

Janet de Seton 1

Anna de Seton 1


[S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 1, page 1285. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.

Sir William de Seton, feudal Lord of Seton, from which he took his name; granted the lands of Wester Fansyde to his esquire John de Fansyde c1367, a grant confirmed by Robert II 20 June 1371. [Burke's Peerage]

William was a distiguished soldier and took part in the Holy War with his father and was in Jerusalem before 1383 when he served with the Scottish army raiding the north of England in that year.(3)

He was called "Baron, lord of Seton" in a petition to the Pope which was granted 27 Oct. 1394 but was called a Knight in a charter of the lands of Borde granted by him to Patrick Fleming dated 14 May 1402.(4)

William was taken prisoner by the English at the battle of Homildon Hill on 14 Sept. 1402 and seems to have remained unransomed for some years as a William Seton was in captivity in the Tower along with the King of Scotland's son in 1406.(5)

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Sir William de Seton, 1st Lord Seton's Timeline

Seton, East Lothian, Scotland
Age 27
Seton, East Lothian, Scotland
Age 29
East Lothian, Scotland, United Kingdom
Age 31
Age 39
Aberdeenshire, Scotland, United Kingdom
August 17, 1424
Age 81
Braize, Allier, Auvergne, France