Book  (1906)  Page(s) 51.  
 
Principal garden varieties of Clematis:
Patens type. (Flower in May and June.)
Lord Napier... Mauve.

Magazine  (1877)  Page(s) 260, 269.  
 
p. 260: Lord Napier. Flor. Mag., 1870, pl. 495-96.

p. 269: Clematis Lord Napier (Noble); violet grsâtre.

Magazine  (29 Mar 1873)  Page(s) 252.  
 
Royal Botanic Society. (March 26th.)
Miscellaneous Plants.
One of the most attractive features of the exhibition was a collection of Clematises in small pots, and profusely flowered, exhibited by Mr. Noble, of Sunningdale, all of which are well suited for early blooming and conservatory purposes, viz.. Queen Guinevere, Lord Londesborough, Lady Londesborough, Lord Napier, Miss Bateman, and Albert Victor.

Book  (1872)  Page(s) 120.  
 
Descriptive Notes of Species & Varieties.
C. Lord Napier (Noble). — One of the numerous varieties belonging to the group typified by C. patens and C. Standishii, and which produce their flowers in the early spring months.  The habit of growth, and the foliage, resemble those of the other varieties of Mr. Noble's strain; while the flowers are large and full, eight-sepaled, the colour being a very deep mauve, with a reddish tinge in certain stages of development, and each sepal is marked with a paler mauve bar; the long chocolate-purple anthers are attached by white filaments, reddish at the top.  It is figured in the Floral Magazine (t. 495, fig. 3), but not very correctly as to colour.

Magazine  (1870)  Page(s) plates 495-496.  Includes photo(s).
 
Clematis — Miss Bateman, Mrs. Lister, Lord Napier, & Lady Londesborough.
No climbing plant has received of late years so much attention as the Clematis, and none have more richly rewarded the labours of those who have attempted to improve them by hybridization.  We have already described the great success of Mr. George Jackman, of Woking, in the production of such kinds as Jackmanni, Prince of Wales, Rubella, Magnifica, and Mrs. Bovill, and every season confirms the good opinion we have entertained of them.  The varieties which are now figured are of an entirely different strain; for whereas those raised by Mr. Jackman are hybrids between viticella and lanuginosa, and are summer and autumn flowering plants, those which have been raised by Mr. Noble of Sunningdale, are hybrids of a different character, and are early-flowering. They have been exhibited largely by Mr. Noble during the last spring, and have gained several certificates.  It will be at once seen that they differ very materially from the Woking seedlings, in the greater number of petals, and the greater delicacy of their colouring, not so rich perhaps, but equally beautiful.  We have selected four of the best for illustration.  Miss Bateman (fig. 1) is a flower of the most perfect whiteness; Mrs. Lister (fig. 2) differs from it in having a very pale rosy lilac tinge at the base of the petals; Lord Napier (fig. 3) is a very pale mauve-coloured flower, each petal being margined with rosy purple giving it a very distinct appearance; while Lady Londesborough (fig. 4) is of a very delicate lavender tint, each petal having down the centre a broad well-defined line of a lighter shade of the same colour; in each flower the stamens are mauve-coloured, and in the lighter varieties form a pleasing contrast to the petals.