Commonwealth Was Graves has 2 J Evans listed as killed with the Herefordshire Regt (both in 1st Battalion)
http://www.cwgc.org/search/casualty_details.aspx?casualty=297739http://www.cwgc.org/search/casualty_details.aspx?casualty=275040Soldiers died in the Great War (SDGW) gives their details as :
Name: John Evans
Birth Place: Canon Pyon, Herefords
Residence: Bishop's Stone, Herefords
Death Date: 23 Jul 1918
Death Location: France & Flanders
Enlistment Location: Hereford
Rank: A/L/Corporal
Regiment: Herefordshire Regiment
Battalion: 1/1st Battalion
Number: 235997
Type of Casualty: Killed in action
Name: Joseph Evans
Birth Place: All Saints, Hereford
Death Date: 1 Aug 1918
Death Location: France & Flanders
Enlistment Location: Hereford
Rank: Private
Regiment: Herefordshire Regiment
Battalion: 1/1st Battalion
Number: 236222