According to data in the Stadsarchief Amsterdam Ulli Rosenfeld (born in 1924 in Berlin) lived with this family from January 1942 until his deportation in July 1942.
Addition
According to data in the Stadsarchief Amsterdam Ulli Rosenfeld (born in 1924 in Berlin) lived with this family from January 1942 until his deportation in July 1942.