By the dates it looks like he was a casualty at the Battle Of Messines he has no known grave as his body may have been recovered and buried but subsequently lost to Artillery bombardments devastating the ground he was buried in... alternatively if he was killed in an artillery strike there may have been no body left to bury..
Unit War Diary for 7th South Lancs should give approx positions where they were....
There are 54000 Lads with no known grave remembered on the Menin Gate memorial on the Ypres Salient.
Ady