Son of Annie Davies (formerly Arcus, nee Morris), of 284, Leigh Road, Daisy Hill, Westhoughton, Lancashire, and the late James Arcus. Inmate of the Lostock Industrial School in 1901, and in barracks at Isle of Carisbrooke, Hampshire as Lance Corporal with 1st Bn., Warwickshire Regiment in 1911.
- Surname: Arcus
- Forename: Sidney Emmanuel
- Date of birth: Not known
- Birth place: Bolton, Lancashire
- Place of residence: Great Lever, Lancashire
- Gender: Male
- Age of death: 27
- Place of death: Not known
- Date of death: March 13th, 1915
- Casualty type: Not known
- Service medals: St / V / BW
- Silver War badge: Not known
- Awards: Not known
- CWGC Memorial: Le Touret Memorial, Pas de Calais, France
- CWGC reference: Panel 17 and 18.