I am aware that there are thousands of Koch's in the world but the anscesters I am trying to research I believe stayed in germany . Henry W. Koch my great great grandfather married an Anna Mary or Marie A. Hartman from the Darmstadt region .they had five children, Henry Koch , Ernest W.Koch, Charles Koch , August Koch and Ella Koch. all of the children came to the United States.They settled mostly in Cass and Morgan County Illinois and in Missouri. I have been unsuccessful of tracking them in Germany . I dont have their birthdates or death dates , but their names are on all 5 of the childrens wedding certificates any help would be greatly appreciated .