Note: I'd like to extend special thanks to researcher Jared Nathan for sharing his work pertaining to 262703Joan. I also referred to an unpublished article by Nathan Murphy.

Problem: Resolved Who are 262703Joan's parents? To be clear, no record explicitly identifies 262703Joan's mother. However, Nathan W. Murphy has prepared a superbly written article, "The Parentage of Joan, Wife of Thomas Town (d. 1422-1424)," that presents evidence that 262703Joan Cheyne's parents are 525406William Cheyne and 525407Eleanor Salerne. Frankly, Murphy's argument is simply too complex and lengthy to present in full here, so I refer you to the original article. As of this writing (in May 2022), the article hasn't been published, but hopefully it will be published later.

262703Joan married 262702Thomas at Towne (as proven by two lawsuits she filed after his death1,2).

Joh͞n͞a que fuit ux̄ Thome Toune ("Johana who was the wife of Thomas Toune") mentioned in a lawsuit she filed in 1427. Full page.2

Sources Cited:

1: UK National Archives reference CP 40/664 (Court of Common Pleas / Plea Rolls / Chief Justice's roll, 5 Hen VI, Hilary term) on an apparently unnumbered page, a record pertaining to a lawsuit by Joan Toune (widow of Thomas Toune) against Stephen Bouns of Threulegh, husbandman. I obtained an image of this record from: Anglo-American Legal Tradition, O'Quinn Law Library, University of Houston; <http://aalt.law.uh.edu/AALT1/H6/CP40no664/aCP40no664fronts/IMG_0415.htm>, accessed 1 May 2022. You can see AALT's index entry for this record at <https://waalt.uh.edu/index.php/CP40/664> by searching "widow of Toune."

2: UK National Archives reference CP 40/664 (Court of Common Pleas / Plea Rolls / Chief Justice's roll, 5 Hen VI, Hilary term) on an apparently unnumbered page, a record pertaining to a lawsuit by Joan Toune (widow of Thomas Toune) against John Grymmesham of Faveresham, brewer. I obtained an image of this record from: Anglo-American Legal Tradition, O'Quinn Law Library, University of Houston; <http://aalt.law.uh.edu/AALT1/H6/CP40no664/aCP40no664fronts/IMG_0819.htm>, accessed 1 May 2022. You can see AALT's index entry for this record at <https://waalt.uh.edu/index.php/CP40/664> by searching "widow of Toune."