I have very limited information about the Younker's in my database. As these are not direct ancestors, I have not gone in great depth. Hopefully these connect with your family. Jacob Younker, born 28 Aug 1836 in Switzerland married Mary Ann (Schreffler) Moyer from PA about 1866-7 in Will County, IL. He died Joliet, Will, IL 9 May 1905. They had Edward, Frank, Elijah, and Cornelius. They moved to IA about1875 (Cornelius was born there). She died Sumner, Bremer, IA.