When Charles Kauffman Yost was born on 28 March 1845, in Ohio, United States, his father, Jacob Yost Jr., was 35 and his mother, Mary Ann Kauffman, was 60. He married Aurilla Catherine Kincaid on 14 December 1871, in Butler, Iowa, United States. They were the parents of at least 3 sons and 5 daughters. He lived in Butler, Iowa, United States in 1895 and Madison Township, Butler, Iowa, United States in 1900. He died on 6 December 1929, in Ripley Township, Butler, Iowa, United States, at the age of 84, and was buried in Butler, Iowa, United States.
Americanized form of German and Dutch Jost or Joost , Slovenian, Croatian, Czech, and Slovak Jošt.