Simon Leiser (Kerpen, 3 July 1889) is husband of Eva Leiser-Leiser (Kerpen, 19 September 1891) and father of Kurt Leiser (Kerpen, 28 November 1915) and Helmuth Leiser (Kerpen, 9 January 1923). All persons are listed in the site on different pages. One child survived the war.
See Familienbuch Euregio at
http://www.familienbuch-euregio.de/genius/php/gast.php?why=link&for=person&id=154417
Addition