Johannes Gassenaar was born⁽¹⁾ about 1841 in Raalte, Ov. He married⁽²⁾ Aleida Wilhelmina Westerhof on 10 Oct 1895 in Zwolle, Ov.
Aleida Wilhelmina Westerhof⁽¹⁾ was born⁽²⁾ about 1853 in Zwolle, Ov. She married⁽³⁾ Johannes Gassenaar on 10 Oct 1895 in Zwolle, Ov.