On 18 Apr 1738 Niclaes married
Johanna Arianna Sluyter (27204) , daughter of
Cornelis Sluyter (ca 1695-) &
Anna Woodcock (10925) (ca Oct 1702-), in Athens, Greene County, New York.
Johanna Arianna was baptized in Kinderhook Reformed Church, on 23 Jan 1723.