I found the following info on Ancestry.co.uk - I hope it helps!

Father: James Turnbull
Mother: Catherine Welsh
Birth: Birkenhead Cheshire England
Death: 30/07/1944
Residence: 1941 Birkenhead Cheshire England
Name: Peter Turnbull
Given Initials: P
Rank: Private
Death Date: 30 Jul 1944
Number: 3783320
Birth Place: Birkenhead
Residence: Birkenhead
Branch at Enlistment: Infantry
Theatre of War: Western Europe Campaign, 1944/45
Regiment at Death: East Lancashire Regiment
Branch at Death: Infantry
Name: Pvt Peter Turnbull
Maiden Name:
Death Date: 30 Jul 1944
Cemetery: Fontenay-le-Pesnel War Cemetery, Tessel
Burial or Cremation Place: Fontenay-le-Pesnel, Departement du Calvados, Basse-Normandie, France
A photo of his headstone is here -
CLICK LINK.