+--Andreas HAACK 
      +--August HAACK  (20 JUN 1845-4 NOV 1914)
      |  +--Maria KELCH 
   +--Alexander Frederick HAACK  (8 FEB 1871-15 JAN 1934)
   |  +--Amelia LEHRKE  (30 NOV 1858-28 APR 1935)
+--August HAACK  (BEF 1903-1967)
|  +--Marie BISCHOFF  (5 OCT 1876-25 MAR 1948)
Living HAACK 
|     +--August PIONTKOWSKI 
|  +--Hermann PIONTKOWSKI  (3 NOV 1881-6 FEB 1915)
|  |  +--Charlotte CZCHOWSKI 
+--Wanda Elfriede PIONTKOWSKI  (14 OCT 1906-1994)
   +--Emma DREUSCHER  (11 OCT 1887-4 FEB 1953)