Father:Andries Frederick Dreyer (1876 - 1956) Mother:Elizabeth Maria Dreyer (1877 - 1953) Siblings Rudolf Petrus Dreyer (1901 - 1964) Margaret Mary Ann Dreyer (1903 - 1982) Anna Maria Delport (born Dreyer) (1905 - 1993) Elizabeth Maria Gertruida du Bruin (born Dreyer) (1907 - 1987) Gertruida Maria Margeretha Venter (born Dreyer) (1909 - 1990) Bartholomeus Thomas Johannes "Bart" Dreyer (1913 - 2001) Johanna Helena Olivier (born Dreyer) (1920 - ?) Anna Elizabeth Sophia Olivier (born Dreyer) (1923 - 2002)