When Johan Theodorus Johansen was born in August 1737, in Vemmetofte, Tryggevælde, Denmark, his father, Johan Georg Von Lengerken, was 35 and his mother, Catharina Sophia Harboe, was 23. He died on 2 February 1770, at the age of 32.
Some characteristic forenames: Scandinavian Erik, Per, Niels, Nils, Thor, Johan, Bjorn, Lars, Oluf, Borge, Holger, Jarl.
Norwegian, Danish, and North German: patronymic from the personal name Johan (Scandinavian), Johann (German), vernacular forms of Johannes (see John ). Compare Johanson and Johnson .