Peter Ellis, Brookton Highway, Kelmscott has propagated it in the past and I will check to see whether he had success this season. I'm very sorry the cuttings weren't successful. Let me know when you're ready to give it another go.
Couldn't have confirmed the identity without your input Patricia.
It was very much one of those identifications that many contributed to.
Penny Hooper loved and preserved "Penrose" for many years and Peter Ellis propagated it and shared it. When I shared photos over the years, Pernetiana lovers in the USA noticed the resemblance to 'Autumn' and Hillary Merrifield went to work on possibilities in the family tree of 'Autumn'. After Hillary put forward the suggestion of 'Indian Summer', we discovered that amazingly detailed description in the patent docs via HMF. Then it was you, Patricia, who alerted us to the fact that there were named plants alive and well in Perth for comparison and Warren and Yvonne Hart brought buds, blooms and foliage of their Indian Summer over to compare with those on my plant.
It's a rare and lucky thing to have both an extremely detailed description and a plant that has never lost its name for comparison.
For years we made the mistake of searching for the identity of this rose in the wrong era. Because the house where this rose survives is an older one, with a long established garden, and because the rose has that folded and quartered form, it was assumed that the rose was planted in the garden's early years and all eyes were trained on rose varieties of the late 1800s and early 1900s, not the 1930s or 1940s.