Arnold LePage Agnew was born on January 8, 1891 in Prince Albert, North-West Territories (later known as Saskatchewan) to Thomas James and Ida Mary (Hyslop) Agnew. He worked in the real estate and insurance industry in Prince Albert until his retirement in 1960.
Active in the Prince Albert community, Agnew was a member of the choir of the Cathedral Church of St. Alban the Martyr and served as a lay delegate to the General Synod of the Anglican Church. He was also active in the Prince Albert Historical Society and Prince Albert Little Theatre. A Freemason, Agnew was a Past Master and Life Member of the Kinistino Lodge No. 1 A.F. and A.M. at Prince Albert and an affiliated Past Master of Shellbrook Lodge No. 171 G.R.S. A.F. and A.M.
Agnew died in Prince Albert on August 12, 1982.
Agnew and his wife, Kathleen Dewdney, had five children: Ivan; Daphne; Patricia; Thomas and Arnold.