Looking for Kious of Indiana

My ggg-grandmother Rebecca Ann KIOUS ROTH born Feb. 8, 1853 had two children before marrying Daniel Roth of Dayton, Indiana. I would like to know who’s the father of those children or what happened? The children are Leora Adeline KIOUS born Jan 10, 1871 and Gertrude KIOUS Nov 1875 both in Brookston White County, Indiana.