From Freebmd website,

Deaths Jun 1858
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Nantes Patty Eliza Stoke Damerel 5b 228

Memorial Inscriptions, Stoke Damerel

www.gravestonephotos.com/

a search for the Surname Nantes,

www.gravestonephotos.com/public/findfamily.php?name=Nantes

full name birth year burial year age relationship cemetery village town county country
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Elizabeth Nantes mother of Henry Nantes Old Town Park Municipal Bideford Devon England
Henry Nantes 1804 1826 22 Old Town Park Municipal Bideford Devon England
Henry Nantes father of Henry Nantes Old Town Park Municipal Bideford Devon England

you can request a free photo of the tombstone,

If you search the 1841 and 1851 Census this may give the birth place of Elizabeth,

This was all I could find, hope it helps,