| Duncan | E. | Farmer & Grazier | Beverley | 1883 | Herald Almanack |
| Duncan | E. | Farmer & Grazier | Beverley | 1884 | Herald Almanack |
| Duncan | F. | Miner | Nannine | 1897 | Witton's Directory |
| Duncan | Fdwd. | Farmer | Beverley (Boyadine) | 1885 | Herald Almanack |
| Duncan | H. G. | | Roe Street, Perth | 1897 | Witton's Directory |
| Duncan | J. | Police Constable | Albany | 1879 | WA Almanack |
| Duncan | J. | Victualler (Harwood & Co.) | Fremantle | 1881 | WA Almanack |
| Duncan | John | Farmer | Victoria District (Irwin) | 1869 | WA Almanack |
| Duncan | John | Farmer | Victoria District (Irwin) | 1870 | WA Almanack |
| Duncan | John | Farmer | Victoria District (Mines & Irwin) | 1872 | WA Almanack |
| Duncan | John | Stockowner | Victoria District (Irwin River) | 1873 | WA Almanack |
| Duncan | Miss | Schoolmistress | Victoria Districts (Greenough) | 1882 | WA Almanack |
| Duncan | Miss. | Schoolmistress | Victoria District (Greenough) | 1880 | WA Almanack |
| Duncan | Miss. | Schoolmistress | Victoria District (Greenough) | 1881 | WA Almanack |
| Duncan | Mrs. | Farmer | Greenough | 1879 | WA Almanack |
| Duncan | Mrs. | Farm Owner | Victoria District (Greenough) | 1880 | WA Almanack |
| Duncan | Mrs. | Farmer | Victoria District (Greenough) | 1881 | WA Almanack |
| Duncan | Mrs. | Farmer | Victoria Districts (Greenough) | 1882 | WA Almanack |
| Duncan | Mrs. | - | Victoria District (Greenough) | 1884 | WA Almanack |
| Duncan | Mrs. | Clerk of Court | Greenough | 1885 | Herald Almanack |
| Duncan | Mrs. | - | Victoria District (Greenough) | 1886 | WA Almanack |
| Duncan | Mrs. | Farmer | Greenough | 1887 | WA Almanack |
| Duncan | Mrs. | Farmer | Greenough | 1888 | WA Almanack |
| Duncan | Mrs. | Farmer | Greenough | 1889 | WA Almanack |
| Duncan | T. | Farmer | Victoria District (Greenough) | 1870 | WA Almanack |
| Duncan | T. | Farmer | Greenough Flats | 1873 | Herald Almanack |
| Duncan | T. | Farmer | Greenough Flats | 1874 | Herald Almanack |
| Duncan | T. | Farmer | Greenough | 1875 | Herald Almanack |
| Duncan | T. | Farmer | Greenough | 1875 | WA Almanack |
| Duncan | T. | Farmer | Greenough | 1876 | Herald Almanack |
| Duncan | T. | Farmer & Sheepowner | Victoria District (Greenough) | 1876 | WA Almanack |
| Duncan | T. | Farmer | Greenough | 1877 | Herald Almanack |
| Duncan | T. | Farmer | Victoria District (Greenough) | 1877 | WA Almanack |
| Duncan | T. | Farmer | Greenough | 1878 | Herald Almanack |
| Duncan | Thomas | Farmer | Victoria Districts (Greenough) | 1866 | WA Almanack |
| Duncan | Thomas | Farmer | Victoria District (Greenough) | 1867 | WA Almanack |
| Duncan | Thomas | Farmer | Victoria District (Greenough) | 1868 | WA Almanack |
| Duncan | Thomas | Farmer | Victoria District (Greenough) | 1869 | WA Almanack |
| Duncan | Thomas | Farmer | Victoria District (Greenough) | 1872 | WA Almanack |
| Duncan | Thomas | Farmer | Victoria District (Greenough) | 1873 | WA Almanack |
| Duncan | W. | Woodcutter | Nannine | 1897 | Witton's Directory |
| Duncan. | - | Police Constable | Albany | 1877 | Herald Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1881 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1882 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1883 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1884 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1886 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1887 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1888 | WA Almanack |
| Dundee | W. | Master Mariner | Fremantle | 1889 | WA Almanack |
