Rosa ‘Auswinter’ is a hybrid shrub rose bred in the late 1990s by David Austin Roses, a cross between an unidentified seedling and Rosa ‘Auscot’. A US Plant Patent was received in January 2003 describing Rosa ‘Auswinter’‘s properties as “1. Tall, bushy, arching growth; 2. Quite large, neatly formed rosette shaped blooms with a strong, fruity tea rose fragrance; 3. Very good disease resistance; and 4. Repeat flowering”.
Commercially, this rose is typically sold under the name Crown Princess Margareta, a reference to Princess Margaret of Connaught. Crown Princess Margareta is a trade designation as opposed to the cultivar name; see trade designations and marketing names under the Wikipedia entry on cultivars.