Ernst Rosenbaum was married to Zita Bernstein. He was a weaver and his wife was a teacher of needlework. On January 18, 1944 their son Harry Ronald was born in camp Westerbork.
Register van geboorteakten, opgesteld op de hulpsecretarie van de burgerlijke stand in het kamp Westerbork; archief van de gemeente Westerbork, opgenomen in het archief van de gemeente Midden-Drenthe te Beilen