He is married to Johanna Vos.
They got married on May 31, 1883 at Sprang, NB, NLD, he was 30 years old.Source 1
Zoon van Willem Dalmaijer en Maria Antonia van Dongen.
Huwelijksakten Sprang 1883 akte 4, https://www.bhic.nl/memorix/genealogy/search/deeds/457a2a5f-36e8-d27d-8ec8-06b1aea18a7c
Overlijdensakten Sprang 1939 akte 24, https://salha.nl/bronnen/genealogy/personen/deeds/dad78fdf-1f34-35c6-39e5-7981afa09bab