| Brennan | J. | Telegraph Department | Perth | 1886 | WA Almanack |
| Brennan | J. | Farmer | Albany Road (Williams River) | 1886 | WA Almanack |
| Brennan | J. | Telegraph Asst. | Eucla Telegraph Line (Eyre) | 1886 | WA Almanack |
| Brennan | J. | Telegraphist | Perth | 1887 | WA Almanack |
| Brennan | J. | Shoemaker | Newcastle | 1887 | WA Almanack |
| Brennan | J. | Telegraph Asst. | Eucla (Eyre) | 1887 | WA Almanack |
| Brennan | J. | Farmer | Williams River | 1887 | WA Almanack |
| Brennan | J. | Telegraphist | Perth | 1888 | WA Almanack |
| Brennan | J. | Farmer | Newcastle | 1888 | WA Almanack |
| Brennan | J. | Farmer | Albany Road(Williams River) | 1888 | WA Almanack |
| Brennan | J. | Telegraph Asst. (Eyre) | Eucla, Etc. | 1888 | WA Almanack |
| Brennan | J. | Telegraphist | Perth | 1889 | WA Almanack |
| Brennan | J. | Farmer | Newcastle | 1889 | WA Almanack |
| Brennan | J. | Farmer | Albany Road (Williams River) | 1889 | WA Almanack |
| Brennan | J. | Telegraph Assistant | Eucla, Etc (Eyre) | 1889 | WA Almanack |
| Brennan | J. | Stockman | Nannine | 1897 | Witton's Directory |
| Brennan | J. & T. | Farmer | Busselton | 1876 | WA Almanack |
| Brennan | J. C. | Hairdresser & Tobbacconist | High Street, Fremantle | 1897 | Witton's Directory |
| Brennan | James | Farmer | Newcastle & Toodyay District | 1880 | WA Almanack |
| Brennan | James | Dempster's Store | Newcastle & Toodyay District | 1882 | WA Almanack |
| Brennan | James. | Farmer | Newcastle & Toodyay District | 1881 | WA Almanack |
| Brennan | Jas & John | Farmers | Newcastle | 1897 | Witton's Directory |
| Brennan | John | Farmer | Busselton & Suburbs | 1879 | Herald Almanack |
| Brennan | John | Farmer | Busselton & Suburbs | 1880 | Herald Almanack |
| Brennan | John | Farmer | Busselton, Blackwood, &c. | 1880 | WA Almanack |
| Brennan | John | Farmer | Vasse District | 1882 | Herald Almanack |
| Brennan | John | Farmer | Busselton & Suburbs | 1883 | Herald Almanack |
| Brennan | John | Farmer | Busselton & Suburbs | 1884 | Herald Almanack |
| Brennan | John | Farmer | Busselton (Quindalup & Dunsborough) | 1888 | WA Almanack |
| Brennan | John | Farmer | Busselton, Etc. (Augusta, Etc., Karridale, Boranup & Hamlin) | 1889 | WA Almanack |
| Brennan | John | | Northam | 1897 | Witton's Directory |
| Brennan | John. | Farmer | Busselton & Suburbs | 1881 | Herald Almanack |
| Brennan | John. | Farmer | Busselton, Blackwood &c. | 1881 | WA Almanack |
| Brennan | M. | Labourer | North-West Coast (Maitland River) | 1884 | WA Almanack |
| Brennan | M. | Labourer | North-West Coast (Maitland River) | 1886 | WA Almanack |
| Brennan | Mrs. | Householder | Perth | 1886 | WA Almanack |
| Brennan | P | Bootmaker | Toodyay | 1883 | Herald Almanack |
| Brennan | P. | Farmer & Grazier | Blackwood Warren & Port Augusta (Port Augusta) | 1870 | WA Almanack |
| Brennan | P. | Shoemaker | Toodyay | 1873 | Herald Almanack |
| Brennan | P. | Farmer & Grazier | Blackwood,Warren & Port Augusta | 1873 | Herald Almanack |
| Brennan | P. | Shoemaker | Toodyay | 1874 | Herald Almanack |
| Brennan | P. | Farmer | Blackwood, Warren, & Port Augusta | 1874 | Herald Almanack |
| Brennan | P. | Shoemaker | Toodyay | 1874 | WA Almanack |
| Brennan | P. | Shoemaker | Toodyay | 1875 | Herald Almanack |
| Brennan | P. | Farmer & Grazier | Blackwood | 1875 | Herald Almanack |
| Brennan | P. | Shoemaker | Toodyay | 1875 | WA Almanack |
| Brennan | P. | Farmer | Blackwood | 1876 | Herald Almanack |
| Brennan | P. | Farmer | Blackwood | 1876 | WA Almanack |
| Brennan | P. | Shoemaker | Toodyay | 1876 | WA Almanack |
| Brennan | P. | Farmer & Grazier | Blackwood | 1877 | Herald Almanack |
