Leonardus van der Helm was born on 18 Feb 1819 in Delft; died on 20 Jun 1900 in Haarlemmermeer.
Leonardus married Alida Verbeij on 10 May 1844 in Hazerswoude. Alida was born on 2 Apr 1820 in Zoetermeer; died on 8 Apr 1891 in Haarlemmermeer. [Group Sheet] [Family Chart]
Children:
2. Cornelia van der Helm was born on 18 Mar 1862 in Haarlemmermeer; died on 18 Aug 1940 in Haarlemmermeer.
Cornelia married Pieter van Staveren on 30 Apr 1884 in Haarlemmermeer. Pieter was born on 4 Dec 1861 in Haarlemmermeer; died on 17 Dec 1946 in Haarlemmermeer. [Group Sheet] [Family Chart]
Maria married Jacobus de Boer on 13 Aug 1947 in Haarlemmermeer. Jacobus was born on 13 Apr 1916 in Haarlemmermeer; died on 19 Sep 2006 in Ysselsteyn. [Group Sheet] [Family Chart]