This rose seems to have been unknown outside of Australia. Does anyone know who Grace Archer was?

The rose was catalogued in the 1875 Annual Report on the Melbourne Botanic Gardens, and before the actual listing of the plants, there is a "list of donors" that includes a W. H. Archer of Melbourne who donated plants and seeds. Also catalogued was a Pelargonium 'Grace Archer'.

I did see a brief bio of a William H Archer, an Englishman who moved to Victoria in the 1850's, and whose only surviving child was named Grace, but have no idea if he is the W H Archer who donated plants and seeds to the Botanic Garden, or if his daughter (probably born in the 1860's) is the Grace for whom the rose is named. Possibly that was William Archer, the Tasmanian botanist, architect and politician?