When Niels Jorgensen was born on 19 August 1818, in Egtved, Koldinghus, Denmark, his father, Jørgen Mortensen, was 25 and his mother, Mette Cathrine Michaelsen, was 21. He married Else Marie Rasmussen on 13 January 1844, in Tjæreby, Sorø, Denmark. They were the parents of at least 1 son and 3 daughters. He lived in Egtved, Jerlev, Vejle, Denmark in 1840 and Tårnborg, Slagelse, Sorø, Denmark for about 25 years. He died on 12 August 1883, in Halseby, Tårnborg, Sorø, Denmark, at the age of 64, and was buried in Tårnborg, Sorø, Denmark.