Klein & Simon: my maternal grandfather's ancestors

Some of my maternal ancestors came to the United States from Luxembourg.  Other maternal ancestors came to the United States from Luxembourg and Germany in the middle of the nineteenth century.  My mother was born Verna Mae Klein; her parents were Theodore and Frances (Kokenge) Klein of Granville, Iowa.   My mother's Klein ancestors have been traced to Niederfeulen, Luxembourg.  Her Simon ancestors came from Schoenholthausen, Germany.  In 1981, my cousin Frank W. Klein and I published Good Earth, Black Soil (St. Mary's College Press), which is the story of our Klein ancestors in Luxembourg and their journey to the United States.