Peut-être Henriette Knorr, 1828 – 1834 née Ziegenmayer première épouse de Carl Heinrich Knorr 1800 -1875 ou sa deuxième épouse, Amalie Henriette Caroline Seyffardt 1806-1867

I bought 'Mme. Knorr' from Schultheis back in 2007, along with 'Comte de Chambord' and 'Mme. Boll' from the same source. They appear to be all the same rose. Now, it's my understanding that 'Comte de Chambord' and 'Mme. Boll' of commerce are the same variety; probably the original 'Mme. Boll', and correct me if I'm wrong. But is 'Mme. Knorr' supposed to be distinct? Or, if I try to buy it from another nursery, am I probably going to receive another 'Mme. Boll'/'Comte de Chambord'?.Thanks,
Melissa