Thanks to all who have commented on these postings. The article was interesting Alisdair and the sisters sound like very characterful women. It prompted me to double check the label of the rose in the Rome Rose Garden which reads 'Delaney Sister' rather than the plural. This is clearly an error as the rose comes up as 'Delaney Sisters' on google search.
For today there is 'Dornoar'. Trying to find this rose on the internet, I came up with nothing. Interestingly though, the auto suggestion offered me "rosa dornoar dorieux francia" which is exactly what is written on the label in the Rose Garden. Still no web pages came up, however. A mystery.