| Gregg | Alex | Warehouseman | Victoria District (Geraldton) | 1879 | WA Almanack |
| Gregg | C. | Carpenter | Fremantle | 1884 | WA Almanack |
| Gregg | E. | Fencer | Perth | 1884 | WA Almanack |
| Gregg | E. | | Smiths's Mill | 1897 | Witton's Directory |
| Gregg | J. | Market Gardener | Perth | 1863 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1864 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1865 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1866 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1867 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1868 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1869 | WA Almanack |
| Gregg | J. | Market Gardener | Perth | 1870 | WA Almanack |
| Gregg | Mrs. | Boarding House Keeper | Fremantle | 1873 | WA Almanack |
| Gregg | Mrs. | Boarding-House Keeper | Fremantle | 1874 | WA Almanack |
| Gregg | Mrs. | Householder | Perth | 1883 | Herald Almanack |
| Gregg | Mrs. | Laundress | Perth | 1884 | WA Almanack |
| Gregg | R. | Market Gardener | Perth | 1872 | WA Almanack |
| Gregg | R. | Station Overseer | Mill Stream | 1879 | Herald Almanack |
| Gregg | R. | Station Overseer | Mill Stream | 1880 | Herald Almanack |
| Gregg | R. | Station Overseer | North-West Coast (Mill Stream) | 1880 | WA Almanack |
| Gregg | R. | Station Overseer | Mill Stream | 1881 | Herald Almanack |
| Gregg | R. | Station Overseer | North-West Coast (Mill Stream) | 1881 | WA Almanack |
| Gregg | R. | Station Overseer | Mill Stream | 1882 | Herald Almanack |
| Gregg | R. | Overseer | North-West Coast (Sherlock & George Rivers) | 1882 | WA Almanack |
| Gregg | R. | Station Overseer | Mill Stream | 1883 | Herald Almanack |
| Gregg | R. | - | Mill Stream | 1884 | Herald Almanack |
| Gregg | R. | Shepherd | North-West Coast (George River, Jones' Creek, Etc.) | 1884 | WA Almanack |
| Gregg | R. | Warehouseman | Geraldton | 1885 | Herald Almanack |
| Gregg | R. | Shepherd | North-West Coast (George River, Jones' Creek, Etc) | 1886 | WA Almanack |
| Gregg | R. | Overseer | Onslow (Ashburton) | 1887 | WA Almanack |
| Gregg | R. | Overseer | Onslow (Ashburton) | 1888 | WA Almanack |
| Gregg | R. | Overseer | Onslow, Ashburton | 1889 | WA Almanack |
| Gregg | S. | Victualler | Newcastle | 1868 | WA Almanack |
| Gregg | S. | Victualler | Newcastle | 1869 | WA Almanack |
| Gregg | S. | Victualler | Newcastle | 1870 | WA Almanack |
| Gregg | S. & J. | Victuallers | Toodyay | 1867 | WA Almanack |
| Gregg | W. | Hawker | Perth | 1884 | WA Almanack |
| Gregory | - | Grazier | Kimberley - Derby | 1885 | Herald Almanack |
| Gregory | F. A. | Merchant & Importer | Northam | 1897 | Witton's Directory |
| Gregory | G. J. | Surveyor & Draughtsman | Bayley Chambers, Bayley Street, Coolgardie | 1897 | Witton's Directory |
| Gregory | G. J. | Stock & Sharebroker | King Street, Coolgardie | 1897 | Witton's Directory |
| Gregory | H. J. | Farmer & Grazier | York | 1873 | Herald Almanack |
| Gregory | J. | Farmer | Northam | 1867 | WA Almanack |
| Gregory | J. | Victualler | Guildford (York Road) | 1868 | WA Almanack |
| Gregory | J. | Farmer | Northam | 1868 | WA Almanack |
| Gregory | J. | Victualler | Guildford (York Road) | 1869 | WA Almanack |
| Gregory | J. | Innkeeper | York | 1869 | WA Almanack |
| Gregory | J. | Victualler | Guildford (York Road) | 1870 | WA Almanack |
| Gregory | J. | Victualler | Guildford (York Road) | 1872 | WA Almanack |
| Gregory | J. | Innkeeper | York | 1872 | WA Almanack |
