I am the Great grandson of Christian and Rosina Augustine Meyer and have been trying to locate information on their families. The information I have is Rosina Augustine Meyer was born on January 13, 1839 and died on June 23, 1907. She and Chrisrian were married on Unknown.
Christian Yahr was born on January 01, 1839 and died on February 02, 1908.
They did live in Caldonia, MI, but it was really Thornapple Township, Barry County, Michigan