| Clark | W. | Carpenter | Fremantle | 1884 | WA Almanack |
| Clark | W. | Butcher | York | 1887 | WA Almanack |
| Clark | W. | Builder | Guildford | 1888 | WA Almanack |
| Clark | W. | - | York | 1888 | WA Almanack |
| Clark | W. | Builder | Guildford | 1889 | WA Almanack |
| Clark | W. | - | York | 1889 | WA Almanack |
| Clark | W. | | Roe Street, Perth | 1897 | Witton's Directory |
| Clark | W. A. | | Hutt Street, Perth | 1897 | Witton's Directory |
| Clark | W. G. | Butcher | Murray Street, Perth | 1873 | Herald Almanack |
| Clark | W. J. | Farmer | Murray District - Harvey | 1878 | Herald Almanack |
| Clark | W. M. | | Beaufort Street, Perth | 1897 | Witton's Directory |
| Clark | William | Storeman | York | 1884 | WA Almanack |
| Clark | William | Warehouseman | York | 1885 | Herald Almanack |
| Clark | Wm. | Laborer | York | 1897 | Witton's Directory |
| Clark & Co. | | Storekeepers | Bunbury | 1897 | Witton's Directory |
| Clark (Smith & Clark) | - | Farmer & Graziers | Beverley | 1879 | Herald Almanack |
| Clark (Smith & Clark) | - | Farmer & Grazier | Beverley | 1881 | Herald Almanack |
| Clark (Smith & Clark) | - | Farmer | Beverley | 1883 | Herald Almanack |
| Clark (Smith & Clark) | - | Farmers | Beverley | 1886 | WA Almanack |
| Clark (Smith & Clark) | - | Railway Porter | Beverley | 1887 | WA Almanack |
| Clark Smith & Clark | - | Farmer & Grazier | Beverley | 1882 | Herald Almanack |
| Clarke | - | Farmer | York | 1874 | WA Almanack |
| Clarke | - | Surveyor | Albany | 1887 | WA Almanack |
| Clarke | A. | Farmer | Blackwood (Including Bridgetown) & Warren | 1877 | WA Almanack |
| Clarke | A. | Farmer | Wellington District (Blackwood (Including Bridgetown) & Warren) | 1879 | WA Almanack |
| Clarke | A. | Farmer | Wellington (Blackwood (Including Bridgetown) & Warren) | 1880 | WA Almanack |
| Clarke | A. | Farmer | Wellington District (Blackwood including Bridgetown & Warren) | 1881 | WA Almanack |
| Clarke | A. | Farmer | Wellington District (Blackwood (Including Bridgetown) & Warren) | 1882 | WA Almanack |
| Clarke | A. | Labourer | Newcastle & Toodyay District | 1884 | WA Almanack |
| Clarke | A. | Farmer | Wellington District (Blackwood including Bridgetown & Warren) | 1884 | WA Almanack |
| Clarke | A. | Labourer | Newcastle | 1887 | WA Almanack |
| Clarke | A. | Labourer | Newcastle | 1888 | WA Almanack |
| Clarke | A. | Labourer | Newcastle | 1889 | WA Almanack |
| Clarke | A. | Fettler | Smiths's Mill | 1897 | Witton's Directory |
| Clarke | A. S. | Sheep Farmer | Beverley | 1872 | WA Almanack |
| Clarke | A. S. | Farmer & Grazier | Beverley | 1874 | Herald Almanack |
| Clarke | Arthur | Farmer | Bunbury | 1875 | Herald Almanack |
| Clarke | Arthur | Farmer | Bunbury | 1875 | WA Almanack |
| Clarke | Arthur | Farmer | Bunbury | 1876 | Herald Almanack |
| Clarke | Arthur | Farmer | Bunbury | 1876 | WA Almanack |
| Clarke | Arthur | Farmer | Blackwood | 1877 | Herald Almanack |
| Clarke | Arthur | Farmer | Blackwood, Warren & Bridgetown | 1878 | Herald Almanack |
| Clarke | Arthur | Grazier | Donnelly | 1879 | Herald Almanack |
| Clarke | Arthur | Grazier | Donnelly | 1880 | Herald Almanack |
| Clarke | Arthur | Grazier | Busselton, Blackwood, &c. | 1880 | WA Almanack |
| Clarke | Arthur | Grazier | Busselton, Blackwood &c. | 1881 | WA Almanack |
| Clarke | Arthur | Grazier | Donnelly | 1882 | Herald Almanack |
| Clarke | Arthur | Grazier | Donnelly | 1883 | Herald Almanack |
| Clarke | Arthur | Grazier | Donnelly | 1884 | Herald Almanack |
| Clarke | Arthur. | Grazier | Donnelly | 1881 | Herald Almanack |
