Diederick married Helena Hendrika Page 07 Jan 1913 (Religious), Boshof, , Orange Free State, South Africa. Helena (daughter of Willem Frederik Johannes Page and Petronella Cornelia Johanna van Zijl) was born Abt 1892; died 22 Sep 1967, Bloemfontein, Bloemfontein, Orange Free State, South Africa. [Group Sheet]