Wikipedia
Hielmstierne (noble family)
Hielmstierne ( English: lit. Helm Star) was a Dano- Norwegian noble family.
Henrich Henrichsen (1 January 1715 – 18 July 1780) was a Danish official, historian, and collector of books. He was born in Copenhagen to Niels Henrichsen, a wealthy Icelandic merchant, and Agnete Birgitte, née Finkenhagen.
On 3 February 1747 he was ennobled under the name Hielmstierne, and on 4 August in the same year he married noblewoman Andrea Kirstine Kiærulf (19 January 1730 – 19 October 1806).
Their only daughter, Agnete Marie Hielmstierne (b. 21 July 1752), married Marcus Gerhard Rosencrone, who later was created Count of Rosencrone. They had no children.