hello there are others souvenirs memoirs references to Riom from British POW's than
- George Richard Casse and his Escape to the Allied Army near Clermont
- Prisoners of War in France from 1804 to 1814: Being the Adventures of John Tregerthen Short and Thomas Williams of St. Ives, Cornwall
-it seems there is a third reference I can't read in the Scots Magazine volume 17 (1932)??
actually Riom was largely more a Prussian POW's Depot than British,
only 5 British dead vs 102 Prussians POW's dead in 1813-1814, and two of them 65 and 60 years old :
Merne David from Durhamshire ✟ 65 years old 8th march 1814 sailor on Amie de Judith (sic)
one hour baby born and dead in Riom named Catherine, daughter of a sailor with his wife at the Depot, declared by two fellow sailors
an other sailor Samuel Werdswath ✟ 26 years old
in april 1814
Mallet Guillaume (William probably) ✟ 60 years old from Devonshire
Jones Jean (John probably) ✟ 32 years old from the isle of Wight 7th Dragoons
Rausley George ✟ 23 years old from Harsterre (sic)
Bibliography on POWs
https://www.napoleon.org/wp-content/uploads/2016/04/prisonniersguerre_1800-1815_gallica.pdf