Pieter Jozef Schmetz⁽¹⁾ was born⁽²⁾ on 6 Apr 1895 in Heerlen, L. He married⁽³⁾ Helena Josephina Smeets on 7 Nov 1918 in Voerendaal, L.
Helena Josephina Smeets⁽¹⁾ was born⁽²⁾ on 24 Jul 1898 in Voerendaal, L. She married⁽³⁾ Pieter Jozef Schmetz on 7 Nov 1918 in Voerendaal, L.