David, I am not a serious researcher but was able to find a family member on the Commonwealth War Graves site. I used the same site to access the above information. If the relative you are looking for is not buried in a Commonwealth War Grave then he won't be listed. From the information you provided I could find no listing so assume that he either survived the War (hopefully) or is buried in an unregistered grave.
Sorry I can't be of any further help.