O.K. You want conclusive evidence, well, here it is (well, as conclusive as anything is likely to be at this point). I take the opportunity of attaching this information to comments refering to 'Nora' for reasons that will become clear.
Helpmefind readers following the gradual accumulation of varieties attributable to Giovanni Casoretti will know that among the varieties in the villa Traversi garden identified as being raised by him there were 'Pasta', 'Compton' and 'la belle Judith'. 'Compton' was Sir George Ferrars Compton Marquis Townshend who lived in villa Belvedere, also known as villa Compton, at Blevio on Lake Como. His neighbour was the great opera singer, born Giuditta Negri but known professionally by her married name Pasta. (The rose 'Negri' might refer to her or the Negri brothers who were camelia breeders.).
George Compton, whom Manetti refers to in several articles in the Gardener's Magazine as a person to whom Lombardy is indebted for the introduction of many plants, had to wards, Judith and Nora.