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John Seymour (1408 - 1438)

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John Seymour aka Saymore, de Sancto Mauro
Born in Beckington, Somerset, Englandmap
Ancestors ancestors
[sibling(s) unknown]
Husband of — married [date unknown] [location unknown]
Descendants descendants
Died [location unknown]
Profile last modified | Created 23 Dec 2013
This page has been accessed 943 times.
John Seymour was a member of aristocracy in the British Isles.




John de Sancto Mauro was born at Beckington, Somerset, in a place called ‘Nwbyry’ on 26 May, 1408.[1]

John was the son of John de Sancto Mauro (St Maur, Seymour), and his wife Margaret Erlegh (Erleigh, Erley). His father died on 16 October 1415, and in the Inquisitions post mortem (IPM) held after his death, John was designated his heir though still a minor.

In his father's IPM held at Exeter on 19 December 1415, the John of this biography was described as aged 6 years and more, and in the IPM held at Ilchester on 30 March 1416 as aged 7 years and more, which would place his birth at about 1409.[2]

Marriage and children

He married on or before 23 July 1425, Elizabeth, the daughter of Sir Thomas Brook. This is confirmed by a charter of that date, where Sir Thomas Brook, granted to John and Elizabeth, his wife, and daughter of Thomas Brook, the manor of St Michael Church. This charter was shown to the jurors in the IPM of John, held at Somerset on 8 June 1439.[3]

Four children are mentioned in one of their father's IPMs;[3]

  1. Thomas, his heir;
  2. Joan;
  3. Isabel;
  4. Margaret.


John died on 25 September 1438, and a writ was issued on 8 October 1438 to hold inquisitons post mortem on his estate. These were held at Exeter, Devon on 21 October 1438, and Yeovil, Somerset on 29 October 1438. Another writ was issued on 13 March 1439 for another inquisition at Frome, Someset on 8 June 1439. His son Thomas, aged 11 years and more (or 12 years and more in the second Somerset inquisition) was designated as his heir.[3]


  1. " E-CIPM 23-602: JOHN SON OF JOHN DE SANCTO MAURO", King's College London, 2014. | Mapping the Medieval Countryside [online]. ( : accessed: 22 October, 2018).
  2. J. L. Kirby. "Inquisitions Post Mortem, Henry V, Entries 300-350," in Calendar of Inquisitions Post Mortem: Volume 20, Henry V, (London: Her Majesty's Stationery Office, 1995), 96-109. British History Online, accessed August 22, 2017,
  3. 3.0 3.1 3.2 King's College London, 2014. 'IPMs John Saymore of Pery, Esquire' in Mapping the Medieval Countryside [online]. Available at : Accessed: 27 August 2017.

See also:

  • Source: Call Number: FHL microfilms 104,355 and 104,390 item 2 Title: British Genealogy Abbreviation: #11915 British Genealogy (filmed 1950) Author: Evans, Alcwyn Caryni Publication: Books A to H. National Library of Wales manuscript numbers 12359-12360. Manuscript filmed by the Genealogical Society of Utah, 1950

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On 24 Jul 2017 at 15:22 GMT Monica Edmunds wrote:

Seymour-1510 and St. Maur-3 appear to represent the same person because: Both appear to be the John Seymour or St. Maur who was born ca 1408 (said to be about 7 in the ipm of his father in 1415), son of John Seymour and Margaret Erleigh. The two wives named Elizabeth and surnamed Brookes and Cobham are likely the same woman, as Elizabeth Brookes was dau. of Lord Cobham and referenced in this way in pedigrees without use of name Brookes.

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