Background
He was born in Sandeherred (later Sandar) as a son of ship-owner Aake Torssøn Klavenes (1801–1853).
politician member of the Parliament of Norway
He was born in Sandeherred (later Sandar) as a son of ship-owner Aake Torssøn Klavenes (1801–1853).
He was a brother of priest Thorvald Klaveness, but his two other brothers were ship-owners. Another son, Thoralv Klaveness, became a well-known writer Henrik Klaveness was also an uncle of Anton Fredrik, Thorvald and Wilhelm Klaveness.
He was a granduncle of Anton Fredrik, Dag, Torvald and Kristen Faye Klaveness.
He was a farmer at Gogstad nedre in Sandar. He sold the yard to Joseph Lyhmann in 1861.
In 1865 he bought two thirds of "Søebergverven" from Lyhman, but they sold it together to Jon Elisæus Sanne Wetlesen in 1874. These yards became a part of Framnæs Mekaniske Værksted.
He was elected to the Parliament of Norway in 1870 and 1873 for the constituency Jarlsberg og Laurvigs Amt, serving until 1878.
He also served as mayor of Sandar from 1864 to 1878.