Sophia Elisabeth Hanna Dorothea (Dreier) Knaack born December 15, 1806 in Mamerow. She married a man named, Christoph Johann Friedrich Knaack or Knaak on September 19, 1834 in Mamerow. Christoph was born March 1, 1805 in Mamerow also.

They had at five children including:

• Elisabeth Sophia Wilhelmina Frederica  Adolphine "Rika" Heiden (right) was born Wednesday, November 3, 1841. On Friday, February 21, 1868 she married August Friedrich Anton Theodor Heiden in the village of Mamerow, Germany