Arthur was born in 1883 in the Bury area, Lancashire. His parents were Ralph Magnall (FM034) and Elizabeth Howarth.
In the 1891 Census Arthur was living with his family at 8 Tenterfield (Edenfield Rd), Norden, he is described as being a scholar. The family were at 26 New Road in Norden by the time of the 1901 Census and Arthur was working as a grocer’s assistant. Arthur married Sarah Elizabeth Coupe at St Paul’s Church in Norden on the 14 July 1908. Arthur was working as a grocer and living at 26 Tenterfield.
Arthur appears to have remarried in 1940 to Sarah Elizabeth Sutherst.
Arthur died aged 63 on 22 July 1946 and was buried at St Paul’s, Norden on 25 July. He had been living at 28 Hutchinson Road in Norden. (Rochdale 1946 Q3 10f 294 age 63). He left £1717 19s. 6d. to his widow and his son Ralph Coupe Magnall who was a police constable.