Website/Catalog  (2016)  
 
The plant directory of the Landscape Park Schönbusch near Aschaffenburg of 1783 includes a rose list which gives new insights into "early Roses". This was first published by Mr. Albert Jost in the Magazine Zandera (2010).
The directory is the earliest known document to date that lists new Roses with French names in a considerable scope. This type of name-giving was typical for Daniel August Schwarzkopf, the Court Gardener at Kassel. Many roses which are liste in the Schönbusch Directory were oviously obtained from Kassel-Wilhelmshöhe, Hesse, as several of the listed sorts were provenly obtained there. Moreover Christian Bode, the Court Gardener in Schönbusch, had came there in 1781 from Kassel, where he had been educated in the princely gardens.
For this reason, several of the early roses which were thought o be of Dutch or French origin, should be assumed now to be German obtentions.
Examples are:
'Aimable Rouge' (1783)
'Rose Incomparable' (1783)
'Belle sans Flatterie' (1783)
'Manteau Pourpre' (1783)
'Soleil Brillant' (1783)

Book  (2001)  Page(s) 201, pl. 69.  
 
Rose Incomparable
The 'Incomparable' has the additional epithet 'Die Unvergleichliche' in the Wilhelmshöhe catalogues, and in the Schelhase it is listed as R. provincialis.
Gravereaux found it at malmaison and planted it again in L'Haÿ-les-Roses. It is there called R. gallica 'Agataha Incomparable' and its description matches the picture.

Book  (Jul 1998)  Page(s) 151.  
 
INCOMPARABLE....There were three successive "Incomparable". The first was in the catalogue of Du Pont of 1813; Desportes [1828] said it came from Holland; it was purple. Probably this was at Malmaison. It is again in the catalogue of Vibert of 1819. It is probably extinct...

Book  (1912)  Page(s) 47.  
 
Catalogue des Roses exposées
10. Incomparable.—Provins.
Rose venue de Hollande, dit Desportes; elle était cultivée dans les pépinières de Du Pont.

Website/Catalog  (1842)  Page(s) 30.  
 
Rosa centifolia purpurea incomparabilis, unvergleichliche Purpur-Rose ....1 Courant Mark

Website/Catalog  (1834)  Page(s) 30.  
 
Rosa centifol. incomparable unvergleichliche....12 Schilling

Book  (1828)  Page(s) 55.  
 
Provins...1216. incomparable. (Hollande). Fl. pourpre.

Book  (1824)  Page(s) 1256.  
 
[From the catalogue of Gebrüder Baumann in Bollweiler]
Rosa gallica incomparable 2 francs

Website/Catalog  (1820)  Page(s) 42.  
 
Provins. No. 544 Incomparable

Book  (1818)  Page(s) 50.  
 
Gallica. L'agate prolifère....Sous-variété: L'incomparable, pépinière de Trianon....très-double, et d'un pourpre clair tirant sur le violet.