| Orr | John | Farmer | Toodyay | 1883 | Herald Almanack |
| Orr | John | Farmer/Sheepowner | Toodyay | 1884 | Herald Almanack |
| Orr | John | Farmer | Toodyay | 1885 | Herald Almanack |
| Orr | Mrs. | Housekeeper | Victoria District (Geraldton) | 1881 | WA Almanack |
| Orr | Mrs. | Housekeeper | Victoria Districts (Geraldton) | 1882 | WA Almanack |
| Orr | T. | Publican | Canning & Kelmscott | 1876 | WA Almanack |
| Orton | - | | Leeder Street, Perth | 1897 | Witton's Directory |
| Orton | Jos. | Farmer | Williams River | 1878 | Herald Almanack |
| Orton | Jos. | Farmer | Williams River | 1879 | Herald Almanack |
| Orton | Jos. | Farmer | Williams River | 1880 | Herald Almanack |
| Orton | Jos. | Farmer | Williams River | 1881 | Herald Almanack |
| Osborn | - | Gaoler & Constable | Newcastle | 1873 | Herald Almanack |
| Osborn | - | Gaoler & Constable | Newcastle | 1874 | WA Almanack |
| Osborn | C. | Blacksmith | Dongara | 1897 | Witton's Directory |
| Osborn | H. | Commissariat Carter | Perth | 1872 | WA Almanack |
| osborn | J. | Farmer | Irwin & Dongara | 1873 | Herald Almanack |
| Osborn | J. | Miner | Victoria District (Northampton) | 1884 | WA Almanack |
| Osborn | J. | Miner | Victoria District (Northampton) | 1886 | WA Almanack |
| Osborn | J. | Miner | Northampton | 1887 | WA Almanack |
| Osborn | J. | Miner | Northampton | 1888 | WA Almanack |
| Osborn | J. | Miner | Northampton | 1889 | WA Almanack |
| Osborn | John | Storekeeper | Southern Cross | 1897 | Witton's Directory |
| Osborne | - | Gaoler & Constable | Newcastle | 1874 | Herald Almanack |
| Osborne | - | Gaoler & Constable | Newcastle | 1875 | Herald Almanack |
| Osborne | - | Gaoler and Constable | Newcastle | 1875 | WA Almanack |
| Osborne | - | Gaoler & Constable | Newcastle | 1876 | Herald Almanack |
| Osborne | - | Gaoler & Constable | Newcastle | 1876 | WA Almanack |
| Osborne | - | Butcher | Perth | 1886 | WA Almanack |
| Osborne | A. S. R. | Manager Champion Mine | Nannine | 1897 | Witton's Directory |
| Osborne | E. | Acctnt. W.A.T. Co. | Busselton | 1876 | WA Almanack |
| Osborne | E. | Carpenter | Roebourne | 1885 | Herald Almanack |
| Osborne | E. | Machinest | Karridale | 1897 | Witton's Directory |
| Osborne | E. T. | Wheelwright | Geraldton | 1897 | Witton's Directory |
| Osborne | F. | Wheelwright | North-West Coast (Roebourne) | 1886 | WA Almanack |
| Osborne | F. | Wheelwright andBlacksmith | North-West (Roebourne) | 1887 | WA Almanack |
| Osborne | F. | Wheelwright and Blacksmith | North-West (Roebourne) | 1888 | WA Almanack |
| Osborne | F. | Wheelwright and Blacksmith | North-West (Roebourne) | 1889 | WA Almanack |
| Osborne | G. | Farmer | Eucla (Modrabilla) | 1887 | WA Almanack |
| Osborne | G. | Farmer (Mongup) | Eucla, Etc. | 1888 | WA Almanack |
| Osborne | G. | Farmer | Eucla, Etc (Modrabilla) | 1889 | WA Almanack |
| Osborne | H. | Engine Driver | Perth | 1872 | WA Almanack |
| Osborne | H. | Engine Driver | Perth | 1873 | WA Almanack |
| Osborne | H. | Engine Driver | Perth | 1874 | WA Almanack |
| Osborne | H. | Engineer | Perth | 1879 | Herald Almanack |
| Osborne | H. | Engineer | Perth | 1880 | Herald Almanack |
| Osborne | H. | Wheelwright | Victoria District (Dongara & Irwin) | 1880 | WA Almanack |
| Osborne | H. | Engineer | Perth | 1881 | Herald Almanack |
| Osborne | H. | Wheelwright | Victoria District (Dongara & Irwin) | 1881 | WA Almanack |
| Osborne | H. | Engineer | Perth | 1885 | Herald Almanack |
| Osborne | H. | Wheelwright & Blacksmith | Roebourne | 1885 | Herald Almanack |
