William E. Burrows's "Richthofen" states on page 25 that the line went back as far as Sebastian Schmidt, a native of Coblenz, who lived in Bernau between 1543 and 1555, and who had been a pupil of Martin Luther. Sebastian has a son named Samuel. Sebastian also happened to be a friend of Paulus Schulze, a devoted courtier of Emperor Ferdinand I, who was rewarded with a coat of arms and a Latinized name--Praetorius. Since Schultze had no heirs, he adopted his friend's son, Samuel. Samuel's son was Tobias and Tobias's son Johann was rewarded the surname von Richthofen by Emperor Leopold I. On page 26 it states that Walter came to New York with his English bride in the mid 1870s and then moved to Denver. Although he became an American citizen he built a castle of grey stones with the Richthofen coat of arms set in its north tower. Walter wrote "Cattle-Raising on the Plains of North America". Can anyone trace this Schmidt line back further?