The Early Seton's Descent

Seier de Lens / de Seton (eldest son of Count Lambert de Lens, Flanders).

The family were long to have been known as Flemish and of Carolingian lineage, and from a manuscript at the British Museum from the 16th century it states that "their surnam came home with King Malcolme Camoir foorth of Ingland". Chalmers in his "Caledonia" states that the first Setons were members of a Norman (Flemish) family named "Say" (which was incorrect), and that they obtained from David I land in East Lothian which were called Sey-tun. Sir Richard Maitland of Lethington wrote a "Historie or Chronicle of the Hous and Surename of Seytoun" down to the year 1559, wrote that King Malcolm Canmore "gaif to the predecessour and forebear of my Lord Seytoun the surename of Seytoun... appearandlie be ressoun that the gentilman... possessit the landis of Seytoun for the tyme... thay landis ar callit Seytoun for ane grit caus, becaus thay ly hard upon the Sey cost and the Toun thairof is neir to the Sey."

m. unknown.
Walter de Seton ("Walcher", also known as Dougall, succeeded his father Seier de Lens/ de Seton, a temp Alexander I who d 1124) Walter de Lens, also known as Walter the Fleming as they came from Flanders.
m. Jonet de Quincy, dau and heiress of Robert de Quincy, (note not Roger de Quincy who lived a century later).  She brought as her dowry, the lands of St. Gernains and Winton to the Seton family.
1. Walter de Seton (Secher or Seier, also known as Dougall), he lived during the reign of David I (1124-1153).
A. Alexander de Seaton (a 1150) under investigation ... listed in Seton Pedigree, but not under other sources. He witnessed a charter of the Prince to William de Riddell of several lands in Roxburghshire in 1150, now called the barony of Riddell.  He was proprietor of Seton, Winton, and Winchburgh, and died in the end of the reign of Malcolm IV.
i. Phillip de Seytoune (d 1179), he lived in the reign of William I of Scotland, witnessed a donation of William I, of the church of Strathardel, to the monastery of Dunfermline.
m. Alice (only dau of Waldeve, 4th Earl of Dunbar)
a. Alexander de Seytoun (1) (d c1211) Designed "son of Philip" in the charters of Dunfermline and Aberbrothick.  He witnessed many charters of Alexander II, particularly his confirmation of all donations made by his predecessors to the Abbey of Kinloss, 1226.  Dominus Alexander de Seton (and his brother Thomas de Seton) witnessed a charter of Sir David de Graham to the monastery of Sottray between 1227 and 1230.  Alexander de Seton witnessed a donation of Sayer de Quincy, Earl of Winchester, to the Abbey of Dumfermline, before 1233, and is also mentioned in a donation of the same Earl to the monastery of Newbottle, about the same period.
m. Jean de Berkeley (dau of Sir Walter de Berkeley or Barclay, Chamberlain to the King).
  (1) Bertrand (Bertram or Bartine) de Seton, he received the lands of Ruchlaw from Patrick Earl of March, which gift was confirmed by King William I at Stirling, on February 22, 1172 (which date may be an error and should be 1201).
m. Margaret Comyn (dau of William Comyn, Earl of Buchan, Justiciar of Scotland).
(A) Alexander de Seton (dsp, witnessed confirmation to Charter of Glasgow by King Alexander II, Nov. 22, 1225).
m. unknown.
(B) Adam de Seton (2nd son, succeeded his father, d early in reign of Alexander III - 1249-1292).
m. Jane Gifford (or Janet, dau of Hugh Gifford of Yester)
(i) Sir Christopher (I) (or Chrystell) de Seton (d c.1269)
  m. Maud de Percy (dau of Ingelram de Percy, Lord Topcliff in Yorkshire).
(a) Sir Christopher de Seton (2) (companion of Sir William Wallace, d Dillicarew 12.06.1298).
m. Agnes Dunbar, dau of Sir Patrick Dunbar, 'black beard', 8th Earl of Dunbar, 1st Earl of March.
((1)) Sir Christopher Seton (3) of Seton (the famed "Good Sir Christell", supporter and brother-in-law of King Robert I, The Bruce.  He was awarded the "double-tressure" in addition to his paternal coat of arms as a result of his marriage into the Royal House.  He was executed at Dumfries at the hands of the English.)
m. Christian Bruce (d 1357, dau of Sir Robert de Bruce, 6th of Annandale - sister of King Robert I)
((A)) Sir Alexander Seton (2), only son, continued below
((2)) Sir John de Seton (executed at Newcastle).
m. unknown.
((A)) issue
((3)) Sir Humphrey de Seton (executed at Newcastle).
m. unknown.
((A)) issue
(ii) Sir John de Seton (who held the manor of Seton in Whitby Strand, Yorkshire, and the estate of Winton).  He, in a donation of Robert de Bruce, Lord of Annandale, to the priory of St. Andrews, 1294, is designed Dominus Joannes de Seton, miles.  John (Johan) de Seton, swore featly to Edward I, 1296.
  m. Erminia Lascelles.
(a) Alexander (?) de Seton.
(iii) Barbara de Seton
  m. Sir William de Keith, Great Marischal of Scotland (d before 1293)
(2) Sir Seyer (Serlo) de Seton (a 1264 - ?)  He, with Malcolm, Earl of  Fife, witnessed a donation of Alexander de Unyeth, to the monastery of Dunfermline, 1254.  Serlo de Seton, and Alexander his son, witnessed a confirmation charter of a donation by Sir William Livingstone of Gorgyn, to the monastery of Holyroadhouse,1263, and Dominus Serlo de Seton, miles, witnessed a donation to the Abbacy of Aberbrothwick, 1265. 
(A) Alexander de Seton
m. unknown.
(B) John de Seton (founded the Seton's of Edmonstone, later the family "Edmonstone" c1248).
m. unknown.
b. Thomas de Seton (Thomas de Winton), witnesses various Charters: witnessed a charter of Sir David de Graham to the monastery of Sottray between 1227 and 1230, and for his brother Alexander de Seton for donation to the Abbey of Dunfermline for the welfare of his soul, before 1246.  From the manuscript pedigree in the possession of the Setons of Mounie it states that "he is supposed to have got from his brother, Sir Alexander, the lands of Winton, and, in accordance with the custom of the times to have adopted the name of Winton or de Winton".
m. unknown.
  (1) issue - de Winton, later Alan de Winton, and the Winton family line. Among those who later swore fealty to Edward I of England, in 1296, were Alan (Aleyn) de Wynton, Thomas de Wynton and Gode de Wynton.  Prynne III. 656,658,659,660.
  (2) son
  (3) dau
c. Richard de Seton, witnessed a Charter of King Alexander II, dated 27th January, 1240.
m. unknown.
d. Emma de Seton
m. Adam de Pollisworth (she brought as her dowry, the lands of Fleming's Beath, Fife, from her brother Alexander).

continued from above

((A)) Sir Alexander de Seton (2), famed Signature of the Declaration of Arbroath, (d Wester Kinghorn, Aug.1332), awarded the lands of Gogar by King Robert I.
m. Isabel, dau of Duncan, 10th Earl of Fife.
((i)) Sir Alexander de Seton (3) (famed Captain and Governor of Berwick, d c1350)
m. Christian Cheyne (dau of Francis le Chen of Straloch)
((a)) Thomas de Seton (dsp 1333)
((b)) William de Seton (dsp 1333)
((c)) Sir Alexander de Seton (4), also Keeper of Berwick Castle (d shortly after his father).  Known as "Fralor Alexander de Seton, miles, hospitalis sancti Johannes Jerusalem en Scotia", he had a safe conduct into England on the affairs of King David II, 12th Aug. 1348.
m. Margaret Murray, sister of Sir William Murray, Captain of Edinburgh Castle.
(((1))) Margaret de Seton - Heiress of Seton (She married her male-bloodline Seton cousin Alan de Winton).  Among the missing charters of David II, is one to Margaret Seton, daughter of the deceased Sir Alexander Seton, of her tocher of the twenty pound land of Lammington.  This marriage produced a feud in East Lothian, known as "Wyntoun's War", and occasioned "more than a hundred ploughs to be laid aside from labourit".  Wyntoun was supported by William de Murray, Governor of the Castle of Edinburgh.  According to Wyntoun’s Chronicle, this affair took place in 1347.
m. (c1347) Alan de Wyntoun (from Seton's of Winton, from Philip de Seton's second son, Thomas).
(((A))) Sir William Seton of Seton, 1st Lord Seton - Lords Seton Line
m. Catherine St. Clair, dau of Sir William St. Clair (Sinclair) of Herdmanston.
    (((B))) Henry de Wyntoun of Wrychhouses (Wrighthouses), continued the Winton name and line (note later Chronicler Andrew Wyntoun).
m. unknown
(((C))) Christiana de Seton
m. George, 10th Earl of Dunbar, 3rd Earl of March.
((d)) Sir John de Seton - Ancestor of Setons of Parbroath (d 1327).
m. ? Ramsay, Heiress of Parbroath
((e)) Christopher de Seton (d. 1333)
m. unknown
((1)) Sir Alexander (or John) de Seton (dsp c1346)
m. (1346) Margaret de Ruthven (dau of William de Ruthven of that ilk).
((ii)) Margaret de Seton
m. Sir John de Elphinston (d. c.1338)
((a)) Alexander de Elphinstone
m. Agnes de Airth