Franciscus Hubertus Kerckhoffs (1863 - 1918)
Maria Elisabeth Bernardina Horsmans (1866 - 1911)

Nicolaas Jozef Hendrik Kerckhoffs

Nicolaas Jozef Hendrik Kerckhoffs⁽¹⁾ was born⁽²⁾ on 30 Nov 1904 in Voerendaal, L.