Book  (2016)  Page(s) 223.  Includes photo(s).
 
Princesse Marie Syn.: 'Belvedere', said to be synonymous is a hybrid multiflora, a different rose entirely.  Breeder: Antoine Jacques, 1829, France.  Parentage: Rosa sempervirens.  I have seen at least three different varieties of roses with this name. One looked like 'Ethel', another looked like 'Princesse Louise'.  Some of the old descriptions say the rose should start out dark red and fade to pink. Others simply describe light pink flowers. The correct variety may no longer exist.

Book  (2012)  Page(s) 68.  
 
Rosiers toujours vert. Rosa sempervirens, Linné. 1ère Serie...
R. Sempervirens La Princesse Marie, Jacques

Book  (2003)  Page(s) 51.  
 
'Princesse Marie'

Magazine  (2001)  
 
[From "Antoine Jacques - Head Gardener to Louis Philippe", by Barbara Tchertoff, Part II]
‘Princesse Marie’ (Jacques, 1829). Professor Jay’s genetic analyses prove that this rambler is a sempervirens hybrid. Unfortunately the first samples examined were wrongly named but the laboratory has now had the chance of examining samples kindly supplied by Mr. Marriott from David Austin`s nursery. These have proved to be sempervirens hybrids, so they are on the right track, but the genetic analyses have not yet been completed.
According to Jacques’ own description, this rose has medium-sized flowers, full, cupped, very pale pink. (It can reach a tremendous height – up to 10m (32ft), with cascades of flowers which Peter Beales describes as “charmingly ragged”). Summer flowering

Book  (2000)  Page(s) 110-111.  
 
‘Belvedere’/’Princesse Marie’ = Sempervirens… larges corymbes… fleurs doubles, rose vif, plates et odorantes… feuillage sombre et brillant… rameaux souples et peu épineux… il déteste la chaleur et exige un sol riche. En climat doux, il conserve son feuillage en hiver. Les hybrides de Sempervirens sont largement dus à Antoine Jacques, jardinier du roi Louis-Philippe à Neuilly, mais celui-ci est d’origine controversée puisqu’on le dit également né au château de Belvedere en Irlande. Jacques, France 1829.

Book  (2000)  Page(s) 486.  
 
‘Princesse Marie’ = Création de Jacques, jardinier du duc d’Orléans… gros bouquets de fleurs rose vif. L’autre parent serait un Noisette… Jacques, France 1829. Hybride de Rosa sempervirens.

Book  (Dec 1998)  Page(s) 486.  
 
Princesse Marie Sempervirens. Jacques (France) 1829. Description... bright pink flowers which are borne in very large clusters. The other parent was possibly a Noisette...

Website/Catalog  (Jun 1998)  Page(s) 64.  
 
Belvedere Formerly known as 'Princess Marie'. Large trusses of prettily and distinctly cupped little flowers... soft pink, but they do tend to spot in wet weather. Very robust. Pleasing fragrance. (Jacques 1829)

Book  (1996)  Page(s) 184.  
 
 The delicate soft pink of ‘Belvedere’ tumble gracefully from one of Andre Eve’s rustic trellises in his beautiful rose garden.  Just one of hundreds of old roses to be found there, this variety is also listed as ‘Princess Marie’ and ‘Ethel’, just one of the many conundrums in the world of roses.

Book  (Apr 1993)  Page(s) 473.  
 
Princesse Marie Hybrid Sempervirens, medium pink, 1829, Jacques. Description.