Descendants NakomelingenJan Klerks (1782–1852)1 Jan Klerks (1782–1852) m. Adriana van Helvoort1.1 Joanna Maria Klerks (1821–1867)1.2 Adrianus Klerks (1825–1873)1.3 Lambertus Klerks (1830–1896)