Seeking info re: Caroline "Lena" ?, who married Ludwig Berke of Oborniki ca. 1860.Lena and her four ch.- Mary, Amelia, Herman and Anna - imm. to America in 1869, joining husband Ludwig in Northfield, MN, who had come over five months earlier.She subsequently had two more ch. - Elizabeth and Frank - in Northfield. Dau. Elizabeth would marry Emil Swanson of Cannon Falls.Who were Lena's parents?Where was she from?Any and all help would be very much appreciated.