Bing found the following results
Paeonia lactiflora 'Duchesse de Nemours' (Peony) - Gardenia
Peony 'Duchesse de Nemours' - White Flower Farm
Paeonia Duchesse de Nemours - Peonies - My Peony Society
Duchesse de Nemours Peony — Hidden Springs Peony Farm
Peony Duchesse de Nemours | Grow Peonies | DutchGrown™
Duchesse De Nemours - Peony Bulbs | DutchFlowerBulbs
Duchesse de Nemours Peony - Nature Hills Nursery
Peony Roots Duchesse de Nemours | DutchGrown™
Duchesse de Nemours peony - Home for the Harvest
Duchesse De Nemours Peony | Breck's