есть два населенных пункта Ashton в графстве Northamptonshire
Ashton, East Northamptonshire - (Link)
Ashton, South Northamptonshire - (Link) - именно здесь находится наш памятник

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Here is Crecy vet. John de Harteshull, Baron Hatch d by 1369 at Ashton Northants

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Alabaster effigy of Sir John de Herteshull, who died before 1365, on tomb-chest with arched panels, ball-flower frieze and inscription to upper edge

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St Michael, Ashton, Northamptonshire: alabaster military effigy of Sir John de Herteshull (d.1367)

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Arms: Hartshill. Argent a cheveron sable between ten martlets gules
Sir John. (fn. 27) He died about 1368, and as his son William had died in 1349 his heirs were his three daughters by his second wife, Margaret Stafford. (fn. 28) Elizabeth, one of his daughters, married John Colepeper, and the manor passed to their son, Thomas Colepeper, in 1378, (fn. 29) and he held it in 1392

дата смерти 1368 встречается в генеалогиях намного чаще, чем 1365
дата смерти 1365 встречается в описаниях памятника намного чаще, чем 1368 и с фамилией Herteshull

отец похоронен in St. Margaret's church Saleby Louth Lincolnshire (Link)

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The National Gallery at Melbourne, Australia, purchased in 1922 a fine example of English painted glass of the middle of the fourteenth century. The panel shows the portraits of Sir John of Hardreshull and his wife Margaret, daughter and coheir to Sir James Stafford of Sandon. The figures are all in white glass, of an ivory tint, and the outer narrow margin is also white. The diapered background is of a rich blue colour, the plain border is ruby glass poudree with yellow roses (pl. LXXXV, 1).

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SIR JOHN AND LADY de HARDRESHULL, PANEL (c. 1400)
Artist unknown
Merevale Abbey in Warwickshire was built in 1148, a time when Gothic design was popular across Europe. A key feature of Gothic Cathedrals was their elaborate stained glass windows, of which Merevale was well decorated. And while the abbey was only small, it played its part in British history; Edward III was born there in 1312.
The Abbey was decommissioned by Henry VIII in 1538, and shortly fell into ruin. The above example of a stained glass window was salvaged from the site, and depicts the 14th century lord, John de Hardreshull, and his wife. It was common at this time for important persons to add a panel of themselves to the local church, and so the stained glass became a kind of historical document, recording important events.