Descendants of Gerrit Kalff

1 Gerrit Kalff  b. 1 SEP 1889 d. 1 AUG 1955
  + Margaret De Vries Robbé  b. 29 SEP 1894
    2 ElIen Kalff  b. 16 APR 1918 d. 6 OCT 1938
    2 Roland Kalff  b. 7 MAY 1920 d. 13 APR 1983
      + Jacoba Cornelia Thiel  b. 23 MAY 1924
        3 Ellen Kalff
        3 Steven Kalff
        3 Jurriaan Kalff
    2 Johannes Olivier Kalff  b. 20 JUN 1922