Career
He was the son of his predecessor as chief judge, Peder Carstensen Dreyer, and the Dutch Anna Catharina Stricht von Hoffmerset. He became chief judge in 1703, and sat in court until his death. He became area justice in 1711 and state justice in 1731.
He was also a property investor in Trondheim and the area.
He owned Austrått (although he never lived there), and was part owner of Kvikne kobberverk and Røros kobberverk.