| Trigg | W. | Builder & Publican | Geraldton | 1882 | Herald Almanack |
| Trigg | W. | Builder and Publican | Victoria Districts (Geraldton) | 1882 | WA Almanack |
| Trigg | W. | Builder & Publican | Geraldton | 1883 | Herald Almanack |
| Trigg | W. | Builder & Publican | Victoria District | 1884 | Herald Almanack |
| Trigg | W. | Lic Victualler | Victoria District (Geraldton) | 1884 | WA Almanack |
| Trigg | W. | Hotel Keeper, Architect etc. | Geraldton | 1885 | Herald Almanack |
| Trigg | W. | Licensed Victualler | Victoria District (Geraldton) | 1886 | WA Almanack |
| Trigg | W. | Clerk | Geraldton | 1897 | Witton's Directory |
| Trigg | Wm. | Architect | Victoria District | 1879 | WA Almanack |
| Triggs | Miss A. | Store Assistant | Perth | 1886 | WA Almanack |
| Trigwell | Alf | Farmer & Grazier, Palm Hall | Preston | 1897 | Witton's Directory |
| Trigwell | Chas R. | Farmer, Grazier & Blacksmith, Water Creek | Preston | 1897 | Witton's Directory |
| Trigwell | Chas. | Blacksmith | Preston | 1885 | Herald Almanack |
| Trigwell | Geo. | Farmer | Preston | 1879 | Herald Almanack |
| Trigwell | Geo. | Farmer & Grazier | Preston | 1880 | Herald Almanack |
| Trigwell | Geo. | Farmer | Preston | 1881 | Herald Almanack |
| Trigwell | Geo. | Farmer | Preston | 1882 | Herald Almanack |
| Trigwell | Geo. | Farmer | Preston | 1883 | Herald Almanack |
| Trigwell | Geo. | Farmer & Grazier | Preston | 1884 | Herald Almanack |
| Trigwell | Geo. | Farmer | Preston | 1885 | Herald Almanack |
| Trigwell | Geo. | Farmer & Grazier, Ferndale | Preston | 1897 | Witton's Directory |
| Trigwell | H. | Farmer | Blackwood Warren & Port Augusta | 1868 | WA Almanack |
| Trigwell | H. | Farmer | Blackwood Warren & Port Augusta | 1869 | WA Almanack |
| Trigwell | H. | Farmer | Blackwood Warren & Port Augusta | 1870 | WA Almanack |
| Trigwell | H. | Publican | Blackwood,Warren &?Port Augusta (Preston) | 1873 | Herald Almanack |
| Trigwell | H. | Publican | Blackwood, Warren, & Port Augusta, (Preston) | 1874 | Herald Almanack |
| Trigwell | H. | Innkeeper | Blackwood | 1875 | Herald Almanack |
| Trigwell | H. | Innkeeper | Blackwood | 1875 | WA Almanack |
| Trigwell | H. | Innkeeper | Blackwood | 1876 | Herald Almanack |
| Trigwell | H. | Innkeeper | Blackwood | 1876 | WA Almanack |
| Trigwell | H. | Innkeeper | Blackwood | 1877 | Herald Almanack |
| Trigwell | H. | Innkeeper | Blackwood, Warren & Bridgetown | 1878 | Herald Almanack |
| Trigwell | H. | Farmer | Preston | 1879 | Herald Almanack |
| Trigwell | H. | Farmer & Grazier | Preston | 1880 | Herald Almanack |
| Trigwell | H. | Junr Blacksmith | Bunbury | 1881 | Herald Almanack |
| Trigwell | H. | Farmer | Preston | 1881 | Herald Almanack |
| Trigwell | H. | Farmer | Preston | 1882 | Herald Almanack |
| Trigwell | H. | Farmer | Preston | 1883 | Herald Almanack |
| Trigwell | H. | Farmer & Grazier | Preston | 1884 | Herald Almanack |
| Trigwell | H. | Blacksmith | Wellington District (Bunbury, Etc.) | 1884 | WA Almanack |
| Trigwell | H. | Farmer | Preston | 1885 | Herald Almanack |
| Trigwell | H. | Blacksmith | Wellington District | 1886 | WA Almanack |
| Trigwell | H. | Blacksmith | Bunbury | 1887 | WA Almanack |
| Trigwell | H. | Farmer | Preston, Upper Capel, Towards Blackwood,Etc. | 1887 | WA Almanack |
| Trigwell | H. | Blacksmith | Bunbury | 1888 | WA Almanack |
| Trigwell | H. | Farmer | Bunbury (Preston, Upper Capel, towards Blackwood, Etc.) | 1888 | WA Almanack |
| Trigwell | H. | Blacksmith | Bunbury, Etc. | 1889 | WA Almanack |
| Trigwell | H. | Farmer | Bunbury, Etc. (Preston, Upper Capel, towards Blackwood, Etc.) | 1889 | WA Almanack |
| Trigwell | H. (Sen.) | Farmer | Preston | 1877 | Herald Almanack |
| Trigwell | H. J. | Blacksmith | Bunbury | 1877 | WA Almanack |
