He was born in Kristiania as a son of Andreas Ebeltoft Blom (1853–1901) and Birgitte Bull Lied.
[5] After finishing his secondary education in Skien in 1909[6] and Kristiania Commerce School in 1910, Blom worked abroad for several years.
[9] He also chaired Lilleborg Fabriker, was a board member of the Federation of Norwegian Industries and Brødrene Lever and was a supervisory council member of Bergens Privatbank, Forsikringsselskapet Norden and Morgenbladet.
He chaired the Alliance Francaise branch in Oslo from 1935 to 1937, and was a Chevalier of the Legion of Honour.
[1][7] He headed the Norwegian committee in the International Chamber of Commerce and was vice president from 1948 to 1957, and chaired Norges Eksportråd from 1954 to 1966.