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He married Anne Thomsen . Anne Thomsen was christened at Tornby, Hjorring, Denmark 7 Nov 1823 daughter of Thomas Jensen Plet and Johanne Marie Jensdatter .
They were the parents of 6
children:
Thomas Nielsen
born 15 Mar 1849.
Karen Marie Nielsen
born 9 Jan 1852.
Maren Thomine Nielsen
born 11 Jul 1854.
Christen Nielsen
born 17 Dec 1857.
Mariane Nielsen
born 2 Aug 1860.
Christen Nielsen
born 27 Jul 1862.