For information, the Clematis Bagatelle described as Bred circa 1930 was as novelty onthe catalogue of the german nursery Goos & Koenemann with no information about the breeder.
Erik Benoit (Head gardener of the Parc de Bagatelle, Paris)

This message to inform you the error on the location of Malicorne, who is not in Normandy but in Auvergne (Allier).
Best Regards

http://www.helpmefind.com/gardening/l.php?l=7.11165
Arnaud Delbard
Rose breeder Listing last updated on 08 Aug 2014.
Malicorne, Basse-Normandie
France
Arnaud Delbard - Grandson of Georges Delbard 1905-1999