Josua (Jozua) Blom was a son of the 1st marriage of Marcus Jacob Blom and Rozette de Vries. On 19 November 1900 he married in Amsterdam his cousin (1st degree) Rebecca Blom, a daughter of Machiel Blom and Bertina van Gelderen. The couple had two children, Rozette and Bertina.
The eldest daughter of Josua and Rebecca, Rozette Blom married 18 August 1920 Elkan Leo Boutelje and had two children wit…