I have found much in
Gatzemeyer, Dr. Friedrich. Ahnentafeln um 1800, Sippschaften aus Stadt und
Stift Hildesheim, Band 3. It is unclear as to when Band 3 was published; on
Band 1 one sees "Verlag Degener & Co., Leipzig, 1935". The entire book is
available as LDS microfilm 1181586.
Bob Doerr in the beautiful Missouri Ozarks