Arthur Gore was one of eight children – four sons and four daughters – of Richard Benjamin Gore, who was curator of the Colonial Museum in Wellington, Government Meteorological Observer and Statistician, and Secretary to the Geological Survey Department, the New Zealand Institute and the Wellington Philosophical Society.
Arthur married a widow, Rachel (Mrs Ulick Burke), in Wellington on 30 June 1891.
[8] Playing interprovincial cricket for the Wellington representative team against Hawke's Bay in 1886–87, he opened the bowling and took 7 for 53 and, bowling unchanged throughout the second innings, 6 for 38, as well as scoring 33 opening the batting, in an innings victory for Wellington.
[17] Gore moved to Napier in 1889 to be the local representative of the Australian Mutual Provident Society.
In early 1897 he left AMP and returned to Wellington,[18] where, like his father, he worked at the Colonial Museum.