Jozeph was the widower of Christina Loeb (died 1909) they had at least four children, one of them being Sophie Marianne
In 1910 Jozeph married Flora.
Rudi van Doorslaer & Jean-Philippe Schreiber, De curatoren van het getto: de vereniging van de joden in België tijdens de nazi-bezetting. (2004) pag 113