| Name | Mark George HAYNES |
| Rank/Number | Trooper / 1709 |
| Regiment/Unit | Royal Horse Guards (The Blues) / |
| Enlisted | St Pancras, Middx |
| Age/Date of death | 21 / 23 Jan 1916 |
| How died/Theatre of war | Killed in action / France & Flanders |
| Residence at death | Twyford |
| Cemetery | Quarry Cemetery, Vermelles, Pas de Calais, France |
| Grave Reference | F.20 |
| Location of memorial | Twyford |
| Date/Place of birth | c1895 / Twyford |
| Date/Place of baptism | |
| Occupation of Casualty | |
| Parents/Occupation | John & Mary Ann Haynes / platelayer on railway |
| Parents' Address | Woodbine Cottages, Twyford |
| Wife | |
| Wife's Address |