Thomas de Ashton
English alchemist
About Thomas de Ashton
Born 1403. Thomas de Ashton was an alchemist.
Sir Thomas de Ashton or Assheton (fl. 1446), was an English alchemist.
Ashton was born in about 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.
Alchemy Permission was granted by Henry VI to Sir Thomas to transmute the precious metals, and on 7 April 1446 a special order was issued, 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.
Descendants Sir Thomas, born in Kingsley, Lancashire, England, 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.
Children Elizabeth, b. 1431, married John Trafford, Knight, d. 1488 Douce, b. 1435, married Thomas (Sir) Gerard, Knight, born 15 July 1431 in Kingsley, Lancs, England, died 27 March 1490 in Kingsley, Lancs., England Joan, b. 1437, married Sir John Legh of Norbury Booths.
Note Thomas de Ashton (alchemist) is not, Sir Thomas de Ashton Lord of Croston d. 17 Oct 1407 and, is not the medieval Thomas de Aston, a 13th-century monk d. 7 June 1401: these two men are in Lincoln Cathedral.
Source information
Heritage Consulting. Millennium File [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2003. Original data: Heritage Consulting. The Millennium File. Salt Lake City, UT, USA: Heritage Consulting.
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Important facts
Frequently asked questions
Who was Thomas de Ashton?
English alchemist
When was Thomas de Ashton born?
Thomas de Ashton was born in 1403.
What was Thomas de Ashton's occupation?
Thomas de Ashton was an alchemist.
Sources & further reading
· Wikipedia: Thomas de Ashton
· DBpedia: Thomas de Ashton (alchemist)
Cite this page
APA: Biography.guide. (2026). Thomas de Ashton. https://biography.guide/thomas-de-ashton-alchemist/
MLA: "Thomas de Ashton." Biography.guide, https://biography.guide/thomas-de-ashton-alchemist/.
Chicago: "Thomas de Ashton." Biography.guide. https://biography.guide/thomas-de-ashton-alchemist/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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