Based on several references the timeline of the introduction of 'Blush Noisette' seems to be:
1814 Philippe Noisette sends 'Blush Noisette' to Louis Noisette
1816 Philippe Noisette sends two plants to Jacques Durand in Rouen, who passes them on to Prevost, who sells one to Lendormi in Rouen
1820 Charles Durand in Rouen receives seeds of a 'Perpétuelle-à-Bouquets' from USA. The seeds are passed on to Prevost and Lendormi. The latter breeds 'Noisette à coeur jaune' from this.

Open questions:
- Was the 1820 shipment also by Philippe Noisette?
- Is 'Perpétuelle à Bouquets' a seedling or identical to 'Blush Noisette' or 'Champmeys'?