Nicolai married Catharine Elisabeth Hvidt 24 Jul 1801, København, Danmark. Catharine (daughter of Niels Nielsen Hvidt and Anna Berte Schwindt) was born 11 Feb 1776, København, Danmark; was christened 27 Feb 1776, Frelsers Kirke, Kobenhavn, Kobenhavn, Denmark; died 12 Mar 1851, København, Danmark; was buried 17 Mar 1851, Helligaands, Kirke Kobenhavn, Kobenhavn, Denmark. [Group Sheet]

1. Nicoline Jacobsen was born 22 Sep 1802, Danmark; died 25 Dec 1893, København, Danmark.
2. Emilie Beate Jacobsen was born 2 Aug 1804, København, Danmark; died 9 Feb 1847, København, Danmark.
3. Elisabeth Katharina Jacobsen was born 21 Jun 1811, København, København, Danmark; died 13 Feb 1894, Greve Thune, København, Danmark.
4. Julie Jacobsen was born 31 Jul 1813, Danmark, Danmark; died 23 Jun 1888, København, Danmark.
5. Jacob Jacobsen was born 28 Aug 1816, København, Danmark; died 2 Dec 1893, Danmark.
6. Carl Ferdinand Nicolaisen was christened 31 Oct 1807, Helligånds, København, København, Denmark.
7. Cathrine Elisabeth Jacobsen was born 21 Jun 1811, Cpnhgn, Cpnhgn, Dnmr; died 13 Feb 1894, Greve Thune, Cpnhgn, Dnmr.

Jacob married Anna Marie Kock 1750, Flensburg, Schleswig-Holstein, Prussia, Germany. Anna (daughter of Hinrich Jensen Kock) was born 1732, Flensburg, Schleswig-Holstein, Prussia, Germany; died Yes, date unknown. [Group Sheet]