Background
He was born in Sandar as a son of ship-owner Anton Fredrik Klaveness (1839–1904) and Birthe Marie Andersen (1845–1932).
He was born in Sandar as a son of ship-owner Anton Fredrik Klaveness (1839–1904) and Birthe Marie Andersen (1845–1932).
He operated the shipping company A. F. Klaveness & Company
The cape Kapp Klaveness at Spitsbergen is named after him. He died in November 1958 in Bærum.