This picture appeared in Illustrated Chronicle 08/04/1919
Prisoners in the North - The Forgotten Deaths at Harperley Camp written by John Ruttley, ISBN 0-9543366-1-5 published 2003 gives the names and dates of death of the prisoners as:-
Balzke Alfred Paul Alwin 13 11 1918
Beck Karl Edmund 17 11 1918
Bedorf Anton 16 11 1918
Bertholdt Fritz 11 11 1918
Blankefort Franz Bernard 14 11 1918
Braunigen Kurt 17 11 1918
Fink Karl Edward Wilhelm 17 11 1918
Fischer Otto 12 11 1918
Garling Ernst Klaus Friedrich 11 11 1918
Grassoff Arthur 15 11 1918
Hadla Edward 11 11 1918
Horwege Willy Klaus. August 15 11 1918
Kaussmann Hensonn Gustav 17 11 1918
Kempe Ernst 14 11 1918
Krinn Heinrich Max 18 11 1918
Lange Alfred Karl John 11 11 1918
Lehmann Richard 12 11 1918
Meier Rudolf Max Heinrich. 23 11 1918
Merkle Ernst Heins 13 11 1918
Rosnick Otto Karl 11 11 1918
Rudloff Alfred Paul 13 11 1918
Schink Albert 08 11 1918
Schneider Kurt Gustav 15 11 1918
Schwendler Willy 12 11 1918
Sternberg Paul Ernst Friedrich 07 11 1918
Walkowiak Anton 17 11 1918
Wloczyk Felix 08 11 1918
John Ruttley suggests that the memorial was removed when the bodies were transferred to Cannock Chase in 1963