| Silcock | Miss | Teacher | Greenough | 1885 | Herald Almanack |
| Silcock | Miss. | Teacher | Victoria District (Greenough) | 1884 | WA Almanack |
| Silcock | Mrs. | - | Victoria District (Greenough) | 1874 | WA Almanack |
| Silcock | Mrs. | Farmer | Victoria District (Greenough) | 1876 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1877 | Herald Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1878 | Herald Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1879 | Herald Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1879 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1880 | Herald Almanack |
| Silcock | Mrs. | Farmer | Victoria District (Greenough) | 1880 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1881 | Herald Almanack |
| Silcock | Mrs. | Farmer | Victoria District (Greenough) | 1881 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1882 | Herald Almanack |
| Silcock | Mrs. | Farmer | Victoria Districts (Greenough) | 1882 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1883 | Herald Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1884 | Herald Almanack |
| Silcock | Mrs. | Farmer | Victoria District (Greenough) | 1884 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1885 | Herald Almanack |
| Silcock | Mrs. | Farmer | Victoria District (Greenough) | 1886 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1887 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1888 | WA Almanack |
| Silcock | Mrs. | Farmer | Greenough | 1889 | WA Almanack |
| Silcocks | Mrs. | Farmer | Walkaway | 1897 | Witton's Directory |
| Sillfant | Henry | House Holder | Fremantle | 1867 | WA Almanack |
| Sillifant | Henry | Clerk Fortune Mining Co. | Fremantle | 1863 | WA Almanack |
| Sillifant | Henry | Clerk Fortune Mining Company | Fremantle | 1864 | WA Almanack |
| Sillifant | Henry | Clerk Fortune Mining Company | Fremantle | 1865 | WA Almanack |
| Sillifant | Henry | Clerk Fortune Mining Company | Fremantle | 1866 | WA Almanack |
| Sillifant | Henry | Householder | Fremantle | 1868 | WA Almanack |
| Sillifant | Henry | Householder | Fremantle | 1869 | WA Almanack |
| Silva Isaac & Co. | - | Jewellers | Perth | 1887 | WA Almanack |
| Silver Pan Confectionery Co. | | | 543 Wellington Street, Perth | 1897 | Witton's Directory |
| Silverthorne | John | | Toorak (suburb), Coolgardie | 1897 | Witton's Directory |
| Silverthorne & Adair | J. & J. | Yilgarn Steam Sawmills | Lindsay Street, Coolgardie | 1897 | Witton's Directory |
| Silverwood | T. A. | | Hardinge Street, Perth | 1897 | Witton's Directory |
| Silvester | A. | Licensed Victualler | Perth | 1882 | WA Almanack |
| Silvester | A. | Commission | Perth | 1886 | WA Almanack |
| Silvester | A. | Commission Agent | Perth | 1887 | WA Almanack |
| Silvester | A. | Theatrical Agent | Perth | 1888 | WA Almanack |
| Silvester | A. jun. | - | Perth | 1883 | WA Almanack |
| Silvester | Alf. | Commission Agent | Perth | 1884 | WA Almanack |
| Silvester | Alfred | Commission Agent | Perth | 1884 | Herald Almanack |
| Silvester | Alfred | Commission Agent | Perth | 1885 | Herald Almanack |
| Simcock | Chas. | Brickmaker | Guildford | 1887 | WA Almanack |
| Simcock | Chas. | Brickmaker | Guildford | 1888 | WA Almanack |
| Simcock | Chas. | Brickmaker | Guildford | 1889 | WA Almanack |
| Simcock | Thos. | Brickmaker | Guildford | 1887 | WA Almanack |
| Simcock | Thos. | Brickmaker | Guildford | 1888 | WA Almanack |
| Simcock | Thos. | Brickmaker | Guildford | 1889 | WA Almanack |
| Simcox | W. | Pattern Moulder | Dongara | 1888 | WA Almanack |
