I am trying to find members of my greatgreatgrandmother's family. She was Marie Kohlasheck who married Charles Hilgendorf, lived for a time in Davison County SD. Her father was Henry (Heinrich) Kohlasheck who is found living in Aurora County in the 1910 Census. Her bachelor brother Charles (Carl) also lived in Aurora County, found in the 1910 and 1920 censuses. Surname is spelled variously as Kollesheck, Kolauscheck, Kolochek, and other various misses.