He is married to Roelina Maria Wolthers.
They got married on October 25, 1711 at Groningen, Academiekerk, ds. Lambertus Bieruma, he was 27 years old.Source 2
Child(ren):
1711 GENERALITEITS MONSTERCOMMISSARIS ORDINARIS VAN STAD & LANDE
LID DER STATEN-GENERAAL
GECOMMITEERDE TER ADMIRALITEIT TE AMSTERDAM
SCHOLARCH VAN HET GYNASIUM VAN GRONINGEN
1736 RAADSHEER VAN GRONINGEN
Harco Hilarius Siccama | ||||||||||||||||||||||||||||||||||||||
1711 | ||||||||||||||||||||||||||||||||||||||
Roelina Maria Wolthers |