Joannes Janssen⁽¹⁾ was christened⁽²⁾ on 24 Mar 1748 in Heerlen, L. He died⁽³⁾ on 12 Mar 1817 in Limmel, Meerssen, L. He married⁽⁴⁾ Maria Sophia Maenen on 21 Jan 1787 in Meerssen, L.
Maria Sophia Maenen
Maria Sophia Maenen⁽¹⁾ was born⁽²⁾ on 30 Apr 1743 in Meerssen, L. She married⁽³⁾ Joannes Janssen on 21 Jan 1787 in Meerssen, L.