Liverpool & South West Lancashire FHS - Forum

This is a bit difficult, I don't see an entry on the CWGC site, or Service Records, however there is this Medal Card.
If it's right the soldier could be George Arthur Constantine age 17, living in 1911 at 106 Needham Road, Edge Lane, with siblings and parents Jhon? probably John and Emily Jane Constantine.
The 17 year old and George A from the Medal Card are NOT confirmed as being the same person.

Looks like this could be the 17 yr old George Arthur all grown up in 1943:

Marriage: 11 Aug 1934 St Mary the Virgin, West Derby, Lancashire, England
George Arthur Constantine - 40 Bookbinder Bachelor of 106 Needham Road Edge Hill
Sarah Elizabeth Beatty - 31 Bookbinder Spinster of 69 Morningside Road West Derby
Groom's Father: John Constantine, Deceased, Blacksmith
Bride's Father: John Beatty, Deceased, Seaman
Witness: Herbert Stanley Constantine; Mary Beatty
Married by Banns by: P. W. Morris Curate
Register: Marriages 1933 - 1941, Page 25, Entry 50
Source: LDS Film 1546085

Doesn't discount the MIC but the lack of a death is puzzling.

This one needs some more work

This is from the Liverpool Echo, Tuesday May 14th 1918 in the 'Missing - Information Wanted' section. Not the same first name, but the address 106 Needham Rd is mentioned:

CONSTANTINE - Private H. Constantine 9th Manchester Regiment, reported wounded and missing, March 21, formerly employed at Ayrton and Sounders, Hanover Street - News gratefully received by his Parents, 106 Needham Road, Edge Lane.

He was awarded the SWB-Discharged 22/3/1919

Manchester Regiment
Constantine
352768
Herbert Stanley
Private
Liverpool
Missing
Silver War Badge-possibly taken POW.