Henrietta Louise AHRENS was my gg-grandmother, married to Conrad TOEPFER. I have her DOB as 06/14/1855, and DOD as 11/18/1925. It appears they had 6 sons and 4 daughters (I only have the name of my great-grandmother, Louise Caroline TOEPFER, b. 06/07/????, m. John Cleveland PETERSON, d. date unknown in Boone, Boone Co., IA).
My dad always told us that this line of the family was from the Boone/Davenport, IA area.