Mystery solved. "Mrs. Hamann" was born Cecilia Stoltenberg in 1836 in Holstein, Germany. On 16 Feb. 1857 she married John F. Hamann in Davenport, Iowa. Cecilia died 14 Dec 1924 in Davenport, Iowa. Her brother was Joachim Stoltenberg, who was born Oct. 1820 in the area of Krokau in Probstei, Holstein, Plon, Germany; emigrated with his wife in their aged years to Clinton, Iowa; and Joachim died in Clinton in 1904. This was a brother and sister from Krokau area of Probstei. Looking for any further information.