| Sinclair | J. Senr. | Farmer | Toodyay (Dumbarton) | 1881 | Herald Almanack |
| Sinclair | J. Senr. | Farmer | Toodyay (Dumbarton) | 1882 | Herald Almanack |
| Sinclair | J. Senr. | Farmer | Toodyay (Dumbarton) | 1885 | Herald Almanack |
| Sinclair | J. Snr. | Farmer | Toodyay (Dumbarton) | 1878 | Herald Almanack |
| Sinclair | James | Landowner | Newcastle & Toodyay District | 1880 | WA Almanack |
| Sinclair | James | Landowner | Newcastle & Toodyay District | 1882 | WA Almanack |
| Sinclair | James | Tel. Assistant | Eucla Telegraph Line (Bremer Bay) | 1882 | WA Almanack |
| Sinclair | James | Tel Asst | Eucla Telegraph Line (Bremer Bay) | 1884 | WA Almanack |
| Sinclair | James. | Farmer & Grazier | Toodyay | 1868 | WA Almanack |
| Sinclair | James. | Landowner | Newcastle & Toodyay District | 1881 | WA Almanack |
| Sinclair | Jas. | Telegraphist | Eucla Telegraph Line (Esperance) | 1886 | WA Almanack |
| Sinclair | Jas. | Landowner | Newcastle | 1887 | WA Almanack |
| Sinclair | Jno. | Water Police Con. | Bunbury | 1877 | WA Almanack |
| Sinclair | Jno. | Water Police Constable | Bunbury | 1885 | Herald Almanack |
| Sinclair | Jno. | - | Newcastle | 1887 | WA Almanack |
| Sinclair | John | Grazier | Greenough | 1875 | Herald Almanack |
| Sinclair | John | Grazier | Greenough | 1875 | WA Almanack |
| Sinclair | John | Grazier | Greenough | 1876 | Herald Almanack |
| Sinclair | John | Water Police Constable | Bunbury | 1877 | Herald Almanack |
| Sinclair | John | Water Police Cnstbl. | Bunbury | 1878 | Herald Almanack |
| Sinclair | John | Water Police Constable | Bunbury & Suburbs | 1879 | Herald Almanack |
| Sinclair | John | Water-Police Constable | Bunbury & Suburbs | 1880 | Herald Almanack |
| Sinclair | John | Water-Police Constable | Bunbury | 1882 | Herald Almanack |
| Sinclair | John | Water-Police Constable | Bunbury | 1883 | Herald Almanack |
| Sinclair | John | Water-Police Constable | Bunbury | 1884 | Herald Almanack |
| Sinclair | John | Mail Driver | Newcastle | 1888 | WA Almanack |
| Sinclair | John | Mail Driver | Newcastle | 1889 | WA Almanack |
| Sinclair | John J. | Boatman | Bunbury | 1887 | WA Almanack |
| Sinclair | John J. | Boatman | Bunbury | 1888 | WA Almanack |
| Sinclair | John J. | Boatman | Bunbury, Etc. | 1889 | WA Almanack |
| Sinclair | John. | Water-Police Constable | Bunbury | 1881 | Herald Almanack |
| Sinclair | L. | Assistant Coxswain Water Police | Fremantle | 1873 | WA Almanack |
| Sinclair | L. | Assistant Coxswain Water Police | Fremantle | 1874 | WA Almanack |
| Sinclair | L. | Assistant Coxswain Water Police | Fremantle | 1876 | Herald Almanack |
| Sinclair | L. | Asst. Coxswain W. P. | Fremantle | 1876 | WA Almanack |
| Sinclair | L. | Assistant Coxswain Water Police | Fremantle | 1877 | Herald Almanack |
| Sinclair | L. | Assistant Coxswain W.P. | Fremantle | 1877 | WA Almanack |
| Sinclair | L. | Asst. Coxswain Water Police | Fremantle | 1878 | Herald Almanack |
| Sinclair | L. | Water Police Constable | Wellington District (Bunbury Etc.) | 1879 | WA Almanack |
| Sinclair | L. | Farm Labourer | Eucla Telegraph Line | 1879 | WA Almanack |
| Sinclair | L. | Water Police | Busselton, Blackwood, &c. | 1880 | WA Almanack |
| Sinclair | L. | Wtr. Police Constble. | Wellington District (Bunbury, Etc) | 1880 | WA Almanack |
| Sinclair | L. | Water Police | Busselton, Blackwood &c. | 1881 | WA Almanack |
| Sinclair | L. | Water Police | Busselton, Blackwood &c. | 1882 | WA Almanack |
| Sinclair | L. | Water Police | Busselton, Blackwood &c. | 1884 | WA Almanack |
| Sinclair | L. | Water Police Constable | Busselton | 1885 | Herald Almanack |
| Sinclair | L. | Water Police Constable | Sussex (Busselton) | 1886 | WA Almanack |
| Sinclair | L. | Water Police Constable | Busselton, Etc. | 1887 | WA Almanack |
| Sinclair | L. | Water Police Constable | Busselton | 1888 | WA Almanack |
| Sinclair | L. | | Barrack Street, Perth | 1897 | Witton's Directory |
