Frederick William Koopmann - Pedigree | FamilyCentral
 8 Jun 1879 - 16 Jan 1930
 8 Dec 1849 - 15 Nov 1927
 Apr 1850 - 5 Jun 1931
 Abt 1827 -
 Abt 1824 -
 Abt 1827 -
  Children
    1.
Living