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 also born in Mamerow on March 1, 1805.

They had at five children including:

Mary Lou Opfermann, Agnes Heiden, Karen Wheaton, Joann Kimlin & Dianne Houpt

Gail Baker, Drew Berns, Madelyn Berns, Veronica Berns, Wilma Bicking, Myrna Bishop, Marilyn Burgard, Bertha Drake, Kay Dushane, Elaine Eichbauer, Monita Fergus, Harold Heiden, Mildred Heiden, Norma Heiden, Ronald Edward Heiden, Wm Frank and Helen Heiden, Pat Klass, Helma Nickel, Peter Opfermann, Caroline Rambow, Jane Root, Pastor Don Thomas, Marie & Brick Tommelein, Gwen White, Jeff Wittman and Joyce Wittman.