Mozes Katz was a son of Benjamin Katz and Sijbilla Philipson from Doesburg. On 9 April 1910 he married in Doesburg Sijbilla van Dijk, a daughter of Manus van dijk and Mientjen Katz. The couple had nine children, of whom only Mientjen Eva, Johanna and Roza have survived their childhood; the other six children, five boys and one girl, have died already as babied. The three daughters Mientjen Eva, Jo…