Wollert Otto Hallvard Konow Keilhau was a Norwegian librarian and encyclopedist.
Background
He was born in Kristiania as a son of Carl Keilhau (1864–1900) and Modesta Konow (1864–1931). Wollert Keilhau was a grandson of Lieutenant Colonel Wilhelm Christian Keilhau and nephew of Major General Hans Vilhelm Keilhau, and first cousin of economist and historian Wilhelm Christian Keilhau.
Career
He finished his secondary education in 1912, and enrolled in philology studies at the Royal Frederick University. Already in 1914 he was hired at the Deichman Library, then at the Parliament of Norway Library. He was head librarian here from 1924.
He edited the encyclopedia Norsk konversasjonsleksikon Kringla Heimsins, published in six volumes from 1931 to 1934.
He was also a co-editor of the second edition of the encyclopedia, issued from 1948 to 1954. While studying he chaired the students" Nynorsk association Studentmållaget in 1916.
He also contributed extensively to the biographical dictionary Norsk biografisk leksikon. He died in October 1958 and was buried at Vår Frelsers gravlund.