This rose was found in the garden of a derelict cottage, which also had Aglaia, Lady Hillingdon, Dorothy Perkins, Ophelia, William Lobb, John Hopper and an invasive suckering gallica - not flowering at the time, but Charles de Mills is a common survivor in the Adelaide Hills. The China was growing about 2m up through a Japonica.
It was in a district which was hit hard by the Ash Wednesday bushfires of 1983; I don't know whether the garden was burnt. It is in a 30" / 750mm rainfall area, subject to El Nino droughts.
The garden and cottage have been replaced in recent years.