Sir Thomas "the Alchemist" de Ashton

Is your surname de Ashton?

Research the de Ashton family

Sir Thomas "the Alchemist" de Ashton's Geni Profile

Records for Thomas de Ashton

7,756 Records

Share your family tree and photos with the people you know and love

  • Build your family tree online
  • Share photos and videos
  • Smart Matching™ technology
  • Free!


Thomas de Ashton

Birthplace: Ashton-under-Lyne, Lancashire, England
Death: Died in Ashton-under-Lyne, Lancashire, England
Immediate Family:

Son of Sir John Assheton, M.P. for Lancashire and Jane Assheton
Husband of Elizabeth Ashton
Father of Sir John Assheton; Edmund de Ashton; Nicholas de Ashton; Unknown de Ashton; Elizabeth Trafford and 2 others
Brother of Laurence Ashton; Lucy Shirley; Robert Ashton; Margaret Ashton; Elizabeth Barnes and 5 others
Half brother of Sir Roger de Ashton

Occupation: Knight, Alchemist
Managed by: Private User
Last Updated:

About Sir Thomas "the Alchemist" de Ashton

Sir Thomas de Ashton or Assheton (fl. 1446), was an English alchemist.

Ashton was born in 1403, the son and heir of Sir John de Ashton, of Ashton-under-Lyne, who died in 1428. His half-brother Ralph de Ashton seems to have inherited the main family home, Ashton Hall. From roughly this date, differences appear in the coat of arms, motto and spelling of the two families, indicating that Sir Thomas may have distanced himself from his unpopular half-brother.

Permission was granted by Henry VI to Sir Thomas to transmute the precious metals, and on 7 April 1446 a special order was issued,[1] encouraging two Lancashire knights, Ashton and Sir Edmund de Trafford, to pursue their experiments in alchemy, and forbidding any subject of the king to molest them.

Sir Thomas married Elizabeth, daughter of Sir John Byron, by whom he had eleven children. The eldest son, John, was knighted before the battle of Northampton, 10 July 1460, was MP for Lancashire in 1472 and died in 1508.


  • ___________________________________
  • Sir Thomas Ashton1,2,3
  • M, b. circa 1400
  • Father Sir John Ashton
  • Mother Jane Saville
  • Sir Thomas Ashton was born circa 1400 at of Ashton under Lyne, Lancashire, England.4 He married Elizabeth Byron, daughter of Sir John Byron and Margaret Booth, circa 1422.
  • Family Elizabeth Byron b. c 1402
  • Children
    • Douce Ashton+2
    • Sir John Ashton+5 b. c 1423, d. 1508
    • Edmund Ashton, Esq.4 b. c 1425
    • Jane Ashton+6 b. c 1425
    • Elizabeth Ashton+7,3 b. c 1432
  • Citations
  • 1.[S8488] Unknown author, Burke's Extinct and Dormant Baronetcies, p. 20.
  • 2.[S16] Douglas Richardson, Magna Carta Ancestry, 2nd Edition, Vol. II, p. 249.
  • 3.[S16] Douglas Richardson, Magna Carta Ancestry, 2nd Edition, Vol. IV, p. 207.
  • 4.[S11580] A Genealogical and Heraldic History of the Commoners of Great Britain and Ireland, Vol. IV, by John Burke, Esq., p. 400.
  • 5.[S11576] A Genealogical and Heraldic History of the Extinct and Dormant Baronetcies of England, Ireland, and Scotland, by John Burke, Esq. and John Bernard Burke, Esq., p. 20.
  • 6.[S61] Unknown author, Family Group Sheets, SLC Archives.
  • 7.[S11583] The Wallop Family and Their Ancestry, by Vernon James Watney, p., 771.
  • From:
  • _________________
  • A genealogical and heraldic history of the commoners of Great ..., Volume 4
  • Pg. 248
  • EDMOND TRAFFORD, who was knighted by HENRY VI. at Whitsuntide, in 1426. He m. Alice, eldest daughter and co-heir of Sir William Venable, knight of Bolyn, by Joan, his wife, daughter of John Massey, of Tatton, and had issue,
    • JOHN, (Sir) his heir.
    • Joan, m. first, in 1429, to James Byron, grandson of Sir John Byron, and secondly, in 1443, to William, son and heir of Sir Alexander Radcliffe, of Ordsall.
    • Dulcia, m. in 1438, to Sir John Ashton, of Ashton.
  • Sir Edmond lived until 1457, when he was s. by his son,
  • SIR JOHN TRAFFORD, knighted about the year 1444, who m. Elizabeth, daughter of Sir Thomas Ashton, knight, of Ashton, and had issue, ....
  • Pg. 400
  • .... SIR JOHN RADCLYFFE, knt. of Catherton, married twice: by his second wife, Elizabeth, daughter of John Knyvett of Thirling, he had a son, EDMUND, ancestor of the Radclyffes of Broad Clist, in Devonshire; and by his first wife, Mary, daughter of Sir Thomas Tunstal, knt. of Tunstal, he had a son, JOHN, who m. Katherine, daughter of Richard Molyneux, of Sefton, and left three daughters his co-heirs, namely JOAN, m. to Edmund Ashton, esq. second son of Sir Thomas Ashton, knt. of Ashton-under-Line: MARGARET, m. to Ralph Standish, esq. of Standish; and ELIZABETH, m. to Robert Radclyffe, second son of Alexander Radclyffe, esq. of Ordsall.
  • _________________
  • Sir Thomas Ashton1
  • M, #368932
  • Last Edited=19 Jun 2009
  • Sir Thomas Ashton lived at Ashton, Lancashire, England.1
  • Child of Sir Thomas Ashton
    • 1.Elizabeth Ashton+2
  • Citations
  • 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 1114. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
  • 2.[S37] Charles Mosley, Burke's Peerage and Baronetage, 107th edition.
  • From:
  • _____________
  • Sir Ralph de Ashton or Assheton (fl. 1421–1486), was an officer of state under Edward IV of England.
  • Ashton was the half-brother of Sir Thomas de Ashton (fl. 1446) the alchemist, and the son of the Ashton mentioned by Froissart (see Sir John de Ashton (fl. 1370)). His mother was Margaret, daughter of Sir John Byron of Clayton. In his seventeenth year he was one of the pages of honour to Henry VI, and at the same early age he married Margaret, the heiress of the Bartons of Middleton, and became the founder of the family that held the lordship there until the 18th century, when it passed by the female line to the holders of the Suffield peerage.[1] His grandson Richard Ashton rebuilt St Leonard's church at Middleton in 1524. ....
  • From:
  • _______________
  • Sir John de Ashton or Sir John Assheton (died 1428), was an MP and soldier under King Henry IV and King Henry V.
  • Ashton was the grandson of Sir John de Ashton and his wife, Margary Legh. He was one of forty-six esquires who were summoned to attend the grand coronation of Henry IV in 1399, in honour of which event they were solemnly admitted to the Order of the Bath. ....
  • Sir John died in 1428. He was twice married (firstly to Isabel, heiress of Sir Richard Kirkby) and left many children, of whom the most distinguished were Sir Thomas de Ashton, the alchemist, and Sir Roger de Ashton, of Middleton.
  • From:
  • ----------------------------------------------------------------
  • A History and Genealogy of the Families of Bayard, Houstoun of Georgia: And ... (1919)
  • Pg.53
    • BYRON
  • Pg.54
  • Sir John Byron of Clayton and Marjory Booth had issue:
    • 1. Richard Byron.
    • 2. Sir Nicholas Byron, married a daughter of Sir John Boteler of Beausay, and was ancestor of Lord Byron.
    • 3. Margaret Byron, married first, Sir William Atherton ; married second. Sir Maurice Berkeley. (She perhaps married third, Sir John de Assheton as his second wife).
    • 4. Elizabeth Byron, married Thomas Assheton.
    • 5. Jane Byron, married William Radclyffe.
    • 6. Catharine Byron, married William Brereton.
    • 7. Helena Byron, married ___
  • Of this marriage of Sir John Byron was a Margaret or Mary Byron who, according to authorities cited below, married Sir John de Assheton1 as his second wife. Sir John de Assheton's son by first marriage, Thomas Assheton, married Elizabeth Byron.
  • Note. — Sir John Byron had a daughter Margaret or Mary who, according to both Burke and Foster, married as his second wife Sir John de Assheton, as heretofore stated. Foster says daughter of John Byron, Esq., of Clayton ; Burke says Sir John of Clayton. Other authority places her as daughter of Sir John Byron by Alice Boteler, but it was the son Nicholas who married Alice Boteler. See Robertson et Durbin.
  • ____________________________

ID: I187625

Name: Sir Thomas [@] de Ashton

Sex: M

Birth: 1398 in Ashton-under-Lyne, Lancashire, England

Father: John [IV @] de Ashton b: ABT 1368 in Ashton-under-Lyne, Lancashire, England

Mother: Jane [@] de Saville b: ABT 1370 in Tankersley, Wortley, West Ride Yorkshire, England

Marriage 1 Elizabeth [@] Byron b: ABT 1406 in Clayton, South Manchester, Lancashire, England


Elizabeth [@] de Ashton b: ABT 1431 in Ashton-under-Lyne, Lancashire, England
Thomas [@] de Ashton b: ABT 1436 in Ashton-under-Lyne, Lancashire, England


view all 12

Sir Thomas "the Alchemist" de Ashton's Timeline

Ashton-under-Lyne, Lancashire, England
Age 16
Ashton-under-Lyne, Lancashire, England
Age 16
Derbyshire, England
Age 18
Probably Ashton-under-Lyne, Lancashire, England
Age 22
Ashton-under-Lyne, UK
Age 28
of Mercey Bank
Age 34
Ashton-under-Lyne, Lancashire, England
Age 36
Ashton-under-Lyne, Lancashire, England
Age 63
Ashton-under-Lyne, Lancashire, England