Leon Koekoek was the son of Mozes Koekoek and Betje de Haan. He was an accountant and was married to Judith van Meer. The couple lived at 9 Zuylichemstraat in The Hague. On 7 May 1943 Leon Koekoek died at Vught concentration camp.
Records concentration camp Vught, Sterbebuch 1943