Jan Gabriel Mertens
Jan Gabriel Mertens⁽¹⁾ was born⁽²⁾ on 10 Jul 1837 in Heerlen, L. He died⁽³⁾ on 29 Aug 1921 in Hoensbroek, L. He married⁽⁴⁾ Maria Ida Poulssen on 20 Oct 1869 in Heerlen, L.
Maria Ida Poulssen
Maria Ida Poulssen⁽¹⁾ was born⁽²⁾ on 6 Jun 1853 in Hoensbroek, L. She died⁽³⁾ on 17 May 1927 in Hoensbroek, L. She married⁽⁴⁾ Jan Gabriel Mertens on 20 Oct 1869 in Heerlen, L.