Lion de Haas was married to Carolina Polak. The couple had a son, Simon Bertus de Haas. The family lived at 26 Kerkstraat in Wierden, where Lion de Haas owned a small oil and grease factory. The family members went into hiding in Wierden and later in Borne. They were caught by coincidence on 19 February 1944 and deported to Auschwitz via Westerbork.
H. Hamburger and J.C. Regtien, Joodse oorlogsmonumenten in de provincie Overijssel, alsmede algemene oorlogsmonumenten waarop joodse namen voorkomen. Profiel (Bedum 2002) 62
Lion de Haas and Carolina Polak had three children. Their son Rudolf de Haas died in Mauthausen. One child who lived at another address, survived the war.
Addition of a visitor of the websiteIn addition, a Jokos file (number 5926) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 4588/14400).