| Simpson | G. | Timber Merchant | Bunbury | 1878 | Herald Almanack |
| Simpson | G. | Painter & Decoratr. | Perth | 1880 | WA Almanack |
| Simpson | G. | Attorney, Office of Simpson's Prospecting Syndicate, Ltd, London | Forrest Street, Coolgardie | 1897 | Witton's Directory |
| Simpson | G. T. | Sharebroker | Perth | 1889 | WA Almanack |
| Simpson | G. T. | Sharebroker | First Floor, Saint George's Chambers, Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Simpson | G. T. | M.L.A. | Waterloo Crescent, Perth | 1897 | Witton's Directory |
| Simpson | G. W. | | "Glenville Cottage" Murray Street, Perth | 1897 | Witton's Directory |
| Simpson | Geo. | Timber Merchant | Bunbury | 1877 | WA Almanack |
| Simpson | Geo. | Director, W. A. T. Company | Busselton, Blackwood, &c. | 1880 | WA Almanack |
| Simpson | Geo. | Horse Dealer | Victoria District (Geraldton) | 1881 | WA Almanack |
| Simpson | Geo. | Manager W.A. Timber Company | Busselton, Blackwood &c. | 1881 | WA Almanack |
| Simpson | Geo. | Ostler | North-West (Cossack) | 1887 | WA Almanack |
| Simpson | Geo. | Pearler | North-West (Cossack) | 1888 | WA Almanack |
| Simpson | Geo. | Pearler | North-West (Cossack) | 1889 | WA Almanack |
| Simpson | George | House Dealer | Victoria Districts (Geraldton) | 1882 | WA Almanack |
| Simpson | Goe. | Horse Dealer | Victoria District (Geraldton) | 1880 | WA Almanack |
| Simpson | H. G. | Painter | Perth | 1881 | WA Almanack |
| Simpson | J | Farmer | Victoria District (Greenough) | 1867 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1868 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1869 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1870 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1872 | WA Almanack |
| Simpson | J. | Gardner | Perth | 1873 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1873 | WA Almanack |
| Simpson | J. | Gardener | Perth | 1874 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1874 | WA Almanack |
| Simpson | J. | Schlmstr. Ludlow | Busselton | 1876 | WA Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1876 | WA Almanack |
| Simpson | J. | Farmer | Greenough | 1877 | Herald Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1877 | WA Almanack |
| Simpson | J. | Farmer | Greenough | 1878 | Herald Almanack |
| Simpson | J. | Farmer | Greenough | 1879 | Herald Almanack |
| Simpson | J. | - | Collie Saw Mills | 1879 | Herald Almanack |
| Simpson | J. | Farmer | Greenough | 1879 | WA Almanack |
| Simpson | J. | Farmer | Greenough | 1880 | Herald Almanack |
| Simpson | J. | - | Collie Saw Mills | 1880 | Herald Almanack |
| Simpson | J. | Farmer | Greenough | 1881 | Herald Almanack |
| Simpson | J. | - | Collie | 1881 | Herald Almanack |
| Simpson | J. | Farmer | Victoria District (Greenough) | 1881 | WA Almanack |
| Simpson | J. | Farmer | Greenough | 1882 | Herald Almanack |
| Simpson | J. | - | Collie | 1882 | Herald Almanack |
| Simpson | J. | Farmer | Greenough | 1883 | Herald Almanack |
| Simpson | J. | - | Collie Saw Mills | 1883 | Herald Almanack |
| Simpson | J. | Farmer | Greenough | 1884 | Herald Almanack |
| Simpson | J. | - | Collie Saw Mills | 1884 | Herald Almanack |
| Simpson | J. | Labourer | Sussex (Busselton) | 1886 | WA Almanack |
| Simpson | J. | Labourer | Busselton, Etc. | 1887 | WA Almanack |
| Simpson | J. | Labourer | Busselton | 1888 | WA Almanack |
| Simpson | J. | Labourer | Busselton, Etc. | 1889 | WA Almanack |
| Simpson | J. | Miner | Parker's Range | 1897 | Witton's Directory |
