Christen Sveaas (born 18 June 1956) is a Norwegian businessman, investor, art collector and donor. He is the founder and sole owner of Kistefos AS, vice chairman of the board of the Kistefos Museum and chairman of the board of Anders Sveaas Allmennyttige Fond.
Rolf Kristian Eckersberg Stenersen (13 February 1899 – 15 October 1978) was a Norwegian businessman, non-fiction writer, essayist, novelist, playwright and biographer. He was also a track and field athlete and art collector.
Haaken Andreas Christensen (16 February 1924 – 9 April 2008) was a Norwegian art historian, art collector and gallerist.
He was born in Kristiania to Arne Christensen and Ingeborg Wiese.Christensen graduated in art history from the University of Oslo in 1955. He opened his own gallery in Oslo in 1961, Galleri Haaken, which he was running for about forty years. Among his works is his thesis about Gustave Courbet, two books about Olivier Debré, essays on Serge Poliakoff, Horst Janssen and Alfred Manessier, and the memoir book En gallerists erindringer from 1985. He was decorated Knight of the French Ordre des Arts et des Lettres.
Niels Onstad (26 March 1909 – 17 June 1978) was a Norwegian shipowner and art collector.