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St Mary and St Eanswythe, Folkestone Parish Church
contains an effigy, perhaps Sir John de Segrave, Baron of Folkestone, d.1343

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Image taken from page 39 of 'The Past and Present of the Parish Church of Folkestone. Together with an account of the Reliquary of St. Eanswythe, discovered in 1885. [Illustrated.]'

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Under an arch in the north wall of the chancel is a very ancient tomb, with the effigy of a man having a talbot at his feet, probably placed here in memory of one of the family of Fiennes, constable of Dover Castle, and a Lord warden of the Cinque-Ports

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Under a Mitred Arch, adorn'd with Gothick Workmanship, on the North Side of the Chancell, on an Altar Tomb, lies the Figure, at full Length, of an Armed Man, cut in Stone. No Inscription, or Coat Armour, to shew who it was designd to represent.

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Segrave's eldest son, Sir Stephen de Segrave, died shortly after him in 1325.[3] His second son, John, described by 1312 as John de Segrave the younger, married Juliana, daughter and heiress of John de Sandwich, lord of Folkestone, and died in 1349, leaving an infant daughter and heiress named Mary

а здесь наш персонаж не упоминается среди сыновей
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John de Segrave, 2nd Baron Segrave (+01 сентября 1325)
Отец Alice de Segrave; Lady Ellen Margaret de Segrave, Baroness Ferrers of Groby; Beatrice de Hengrave; Eleanor Criol; Christiana de Segrave; Sibyll de Segrave; Sir Stephen de Segrave, 3rd Baron of Segrave и Richard Segrave

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John de Segrave
Deceased in 1343
Married before June 1312 to Juliana de Sandwich, Heir to one third of Folkestone barony

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Arms of Segrave

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Volume 11, page 609, note n:
Cal. Inq. p.m., vol. ix, no. 598. John de Segrave of Folkestone was the son of his [John, Lord Segrave's (d. 1353)] father's yr. br., who m. Juliane, da. of John de Sandwico, and d. June 1343, leaving the above-named John, who d. July 1349, having had by his wife Blanche a da. Mary aged 15 at his death. She d. 1 Sep. 1349 (Idem, no. 295; Idem, vol. viii, no. 463). See also Cal. Fine Rolls, 1347-56, p. 329.
(Lord Segrave's "father's younger brother", the father of John de Segrave of Folkestone, was also named John.)
In the inquisitions taken after the death of John de Segrave of Folkestone, his daughter Mary is said to be 15 days old, not 15 years. The inquisitions giving her age are those for Kent (taken 22 August 1349) and Essex (taken 22 October). The dates given for John's death are 8 July and 23 September, and those for Mary's are 25 August and 1 September. But these seem to be contradicted by the dates of the earliest writs issued after their deaths - 18 May for John and 24 August for Mary.
No information is given about the wife of John de Segrave of Folkestone in the sources cited. It seems possible that the name Blanche has arisen out of confusion between this John and another John, the son of John, Lord Segrave (d. 1353), who had in 1349 a papal dispensation to marry Blanche, the daughter of John, Lord Mowbray (see Complete Peerage, vol. 9, p. 384, note e).