| Cowan | W. D. | Clerk of Court | Geraldton | 1885 | Herald Almanack |
| Cowan | W. D. | Residant Magistrate | Newcastle | 1886 | WA Almanack |
| Cowan | W. D. | Resident Magistrate | Bunbury | 1887 | WA Almanack |
| Cowan | W. D. | Resident Magistrate | Bunbury | 1888 | WA Almanack |
| Cowan | W. D. | Resident Magistrate | Bunbury, Etc. | 1889 | WA Almanack |
| Cowan | W. J. | Clk Geraldton Court | Geraldton | 1879 | Herald Almanack |
| Cowan | W. J. | Clerk Geraldton Court | Geraldton | 1880 | Herald Almanack |
| Cowan | W. J. | Clerk of Court | Victoria District (Geraldton) | 1880 | WA Almanack |
| Cowan | W. J. | Clerk. Geraldton Court. | Geraldton | 1881 | Herald Almanack |
| Cowan | W. J. | Clerk of Court | Victoria District (Geraldton) | 1881 | WA Almanack |
| Cowan | W. J. | Clerk Geraldton Court | Geraldton | 1882 | Herald Almanack |
| Cowan | W. J. | Clerk of Court | Victoria Districts (Geraldton) | 1882 | WA Almanack |
| Cowan | W. J. | Clerk Geraldton Court | Geraldton | 1883 | Herald Almanack |
| Cowan | W. J. | Clerk Geraldton Court | Victoria District | 1884 | Herald Almanack |
| Cowan | W.D. | Sheepfarmer | York | 1876 | WA Almanack |
| Cowan | W.D. | Sheepfarmer | York | 1876 | WA Almanack |
| Cowan | Wm. | Resident Magistrate | York | 1872 | WA Almanack |
| Cowan | Wm. | Police Magistrate | Roebourne | 1897 | Witton's Directory |
| Cowan and roy | - | Pearlers and Graziers | North-West Coast (Cossack) | 1886 | WA Almanack |
| Cowardine | G. | Carpenter | Geraldton | 1897 | Witton's Directory |
| Cowardine | W. | Carpenter | Geraldton | 1897 | Witton's Directory |
| Cowcher | A. P. | Farmer | William's River | 1897 | Witton's Directory |
| Cowcher | Bros. | Farmer & Grazier | Albany Road (Hotham River) | 1881 | WA Almanack |
| Cowcher | C. | Farmer | Marrinup | 1883 | Herald Almanack |
| Cowcher | C. | Farmer | Marrinup | 1884 | Herald Almanack |
| Cowcher | C. | Farmer | Marrinup | 1885 | Herald Almanack |
| Cowcher | G. | Farmer | Murray | 1876 | Herald Almanack |
| Cowcher | G. | Farmer | Marinup | 1877 | Herald Almanack |
| Cowcher | G. | Farmer | Murray District - Marrinup | 1878 | Herald Almanack |
| Cowcher | G. | Farmer | Marrinup | 1879 | Herald Almanack |
| Cowcher | G. | Farmer | Murray & Serpentine | 1879 | WA Almanack |
| Cowcher | G. | Farmer | Marrinup | 1880 | Herald Almanack |
| Cowcher | G. | Farmer | Murray | 1880 | WA Almanack |
| Cowcher | G. | Farmer | Marrinup | 1881 | Herald Almanack |
| Cowcher | G. | Farmer | Murray (Marrinup) | 1881 | WA Almanack |
| Cowcher | G. | Farmer | Marrinup | 1882 | Herald Almanack |
| Cowcher | G. | Farmer | Murray (Marinup) | 1882 | WA Almanack |
| Cowcher | G. | Farmer | Murray (Marinup) | 1884 | WA Almanack |
| Cowcher | G. S. | Farmer | Albany Road (Hothtam River) | 1886 | WA Almanack |
| Cowcher | G. S. | do and graziers | Albany Road(Murradong) | 1888 | WA Almanack |
| Cowcher | G. S. | Farmer | Albany Road (Murradong) | 1889 | WA Almanack |
| Cowcher | G. S. | Farmer | Maradong | 1897 | Witton's Directory |
| Cowcher | G. S. F. | Farmer | William's River | 1897 | Witton's Directory |
| Cowcher | Geo. | Farmer | Murray (Murray) | 1888 | WA Almanack |
| Cowcher | Geo. | Farmer | Murray | 1889 | WA Almanack |
| Cowcher | H. | Farmer | Marinup | 1877 | Herald Almanack |
| Cowcher | H. | Farmer | Murray District - Marrinup | 1878 | Herald Almanack |
| Cowcher | H. | Farmer | Marrinup | 1879 | Herald Almanack |
| Cowcher | H. | Farmer | Marrinup | 1880 | Herald Almanack |
| Cowcher | H. | Farmer | Murray | 1880 | WA Almanack |
