Nicolas married Marritje Ecker (29365) , daughter of Wolfert Ecker (12586) (ca 1662-1753/4) & Maritje Sybouts Cranckheyt (22008) (ca Oct 1672-aft 1754). Born in 1696 in Philipsburg, Westchester County, New York. Marritje was baptized in New York Reformed Church, on 29 Jul 1696.159 Marritje, daughter of Wolfert Ecke & marrieie Sibouts, witnesses Tibout Hercxen & wife Marritje Abrahams.

Children of Claes Kuyper and Marritje Ecker:
    i. Marethe Kuyper, bp. 23 Aug 1719 at Tarrytown;
    ii. Marethe Kuyper, bp. 20 Jun 1721 at Tarrytown (wit: Wolfart Ecker & Marethe his wife [grandparents]);
    iii. Aeltje Kuyper, b. 8 Sep 1722, bp 15 Jan 1723 at Tappan, m. at New York City 9 Nov 1741 Mattheus Hopper (bp. 13 Mar 1720 at New York, d. 1795 at Clarkstown, Rockland Co., NY);
    iv. Zara Kuyper, bp. 5 Sep 1724 at Sleepy Hollow (wit: Stephen Ecker & Zara Kuyper);
    v. Klaas Kuyper, b. 28 Jan 1727, bp. 16 Apr 1727 at Tappan;
    vi. Cornelis Kuyper, b. 1 Mar 1729, bp. 13 Apr 1729 at Tappan;
    vii. Wolfert Kuyper, b. 10 Dec 1732, bp. 1 Jul 1733 at Tappan, m. at Phillipsburg 8 Jun 1755 Susanna Van Wert (daughter of William Van Wert & Catharina Sie);
    viii. Jacobus Kuyper, b. 17 May 1735, bp. 8 Jun 1735 at Tappan; and
    ix. Steeve, Kuyper b. 16 Apr 1737, bp. 25 Sep 1737 at Tappan.

On 31 Dec 1715 Cornesis Cornelisse married Dirckje Lammertse Smit, daughter of Lammert Adriaensen Smit (ca 1656-ca 1750) & Margrietje Gerritse Blauvelt (ca 1661-1729), in Tappan, Rockland County, New York. Born ca Oct 1695 in Tappan, Rockland County, New York. Dirckje Lammertse was baptized in Tappan Reformed Church, on 24 Oct 1695.

Neeltje married Joseph Seamans. Born ca 1683.