Pieter Mathijs Greven⁽¹⁾ was born⁽²⁾ on 28 Aug 1887 in Beek, L. He married⁽³⁾ Maria Hubertina Laeven on 29 Apr 1920 in Beek, L.
Maria Hubertina Laeven⁽¹⁾ was born⁽²⁾ on 22 Nov 1889 in Beek, L. She married⁽³⁾ Pieter Mathijs Greven on 29 Apr 1920 in Beek, L.