A portrait from about 1900. Could it be a portrait of Carola Woerishoffer, the sister of Countess Seilern?
This picture was photographed by the talented amateur photographer Harriet V. S. Thorne (1843-1926), a member of the New York Camera Club, many of whose photographs were donated to the Connecticut Historical Society’s Museum and Library by The Rosalie Thorne McKenna Foundation (Acquisition: 2011.344.151).