• Cordon Bleu (gallica, unknown, by 1822)
• Der blaue Cordon
• Glory of the Garden
• Le Cordon Bleu
• Pleine Lune
• Rosier de Schönbrunn

3 favorite votes.  

Mauve or mauve blend.

Bred by Unknown Belgian breeder(s) (Belgium, before 1822).
Introduced in France by Dubourg in before 1826 as 'Pleine Lune'.
Introduced in France by Miellez in before 1826 as 'Cordon Bleu'.

Gallica / Provins.  

Purple, lilac shading.  Large, very double, cupped bloom form.  Once-blooming spring or summer.  

USDA zone 4b through 8b.  

Mentioned in The American Rose Annual of 1926, p. 16.