Hausmann was married to
Karen Toller; Hausmann's father-in-law, Niels Toller, owned substantial property in Norway including a number of sawmills, and his mother-in-law was the daughter of the assessor and broker Anders Madsen in
Tønsberg. Thus, as a result of marriage, Hausmann gained control of substantial property. Via his wife, he inherited the
Old Bishop's Palace (or
Oslo Ladegaard) in the Old Town of Oslo. Here he lived until his death. As the holder of Oslo Ladegaard he also had control over most of the land in the Old Town. Another acquisition through the marriage was of the
Frogner Manor, which after his death went to his daughter Karen, who married to
Frederik Christopher de Cicignon. Hausmann also established the iron works
Eidsfos Verk in 1697. During the expansionary period for Norwegian shipping from 1690 through 1710 Haussmann established himself among the leading ship owners in
Christiania. In 1704 and 1705, he was the city's largest shipowner and the fourth largest lumber exporter. He owned the large Bingen log booms on the
Glomma river in
Sørum and controlled much of the timber supply to
Christiania. He exported his own lumber on his own ships and imported salt, wine and liquor. It has been suggested that he also participated in the lucrative – but risky – trade in contraband goods during the war. His only son, Frederik Ferdinand Hausmann (1693–1757), married Cathrine Helvig Werenskiold (1702–1749). The union was childless and the Hausmann line died with Frederik. ==References==