YOU FOLK ARE TOTALLY AMAZING!!! And Gwil I strongly suspect you have found the right man as William was from Ardwick, Manchester and I always thought he'd been in Gallipoli but can't pinpoint where or when I heard that; just random information which has floated up through the passage of time.
One question which has me puzzled....If William was discharged injured on 30 May 1916 why would he be arriving at the Western Front in March 1917? Called up again? If so then I can see that we as a family were extremely fortunate to get him back a second time, and that we are all here today as a result. I can remember him showing me his war-wounds...very deep scars where chunks of flesh had disappeared.
Oh, and what does a Silver Badge represent? I am still waiting for a nephew to send me a photo of the badge but he does say that from memory words on it say something about Britain and Returned Soldiers.
I'm arriving in England in September to do what I'm calling The Grandad Trail, visiting sites where I know he was and lived/worked etc, so I am SO SO thrilled to have the gap of his war years very likely filled in

THANKS AGAIN