Frederick Spangenberg is my gg grandfather.I come down thru Dora and Joseph Nicholas "Nick" Hengen.Will be glad to share info. Otto marr. 1) Calla Dean, 2) Anna F Norvick; Fred marr. Rena Jane Case; and Pauline marr. 1) Joseph P Hengen, 2) Charles W Hengen, both were brothers of Nick Hengen.