Jens Jonas Schroeter Jansen (19 September 1900 – 26 October 1975) was a Norwegian archivist. He was born in

Bærum Bærum () is a municipality in the Greater Oslo Region in Norway that forms an affluent suburb of Oslo on the west coast of the city. Bærum is Norway's fifth largest municipality with a population of 128,760 (2021). It is part of the electoral ...

as a son of vicar Jens Jonas Elstrand Jansen (1844–1912) and Jenny Therese Schroeter (1863–1942), and brother of

Einar Jansen Einar Jansen (27 March 1893 – 13 December 1960) was a Norwegian historian, genealogist and archivist. He was born in Røyken as the son of priest Jens Jonas Jansen (1844–1912) and Jenny Therese Schroeter (1863–1942). He was a nephew of Jens ...

. In 1937 he married Hjørdis Sofie Berg. He

finished Finished may refer to: * ''Finished'' (novel), a 1917 novel by H. Rider Haggard * ''Finished'' (film), a 1923 British silent romance film * "Finished" (short story), a science fiction short story by L. Sprague de Camp See also *Finishing (disa ...

his secondary education in 1918 and graduated from the

Royal Frederick University The University of Oslo ( no, Universitetet i Oslo; la, Universitas Osloensis) is a public research university located in Oslo, Norway. It is the highest ranked and oldest university in Norway. It is consistently ranked among the top universit ...

with the cand.philol. degree in 1927 with a master's thesis on the

Treaty of Björkö The Treaty of Björkö, also known as the Treaty of Koivisto, was a secret mutual defense accord signed on 24 July 1905 in Björkö between Wilhelm II of the German Empire and Tsar Nicholas II of Russia. Wilhelm was the chief author, but he acted ...

. He worked in the

National Archives of Norway The National Archives of Norway (''Riksarkivet'') is the institution responsible for preserving archive material from Norwegian state institutions, as well as contributing to the preservation of private archives. It does this work in cooperation wi ...

from 1936 to 1956, and also worked as a consultant in the

Ministry of Foreign Affairs In many countries, the Ministry of Foreign Affairs is the government department responsible for the state's diplomacy, bilateral, and multilateral relations affairs as well as for providing support for a country's citizens who are abroad. The entit ...

from 1949 to 1952. He was then the manager of Norsk Historisk Kjeldeskrift-Institutt from 1953 to 1970. He is also known as a co-editor of the

biographical dictionary A biographical dictionary is a type of encyclopedic dictionary limited to biographical information. Many attempt to cover the major personalities of a country (with limitations, such as living persons only, in ''Who's Who'', or deceased people onl ...

Norsk Biografisk Leksikon is the largest Norwegian biographical encyclopedia. The first edition (NBL1) was issued between 1921 and 1983, including 19 volumes and 5,100 articles. It was published by Aschehoug with economic support from the state. bought the rights to ...

'' from 1954. He chaired the union Arkivarforeningen from 1938 to 1947 and was a board member of Kjeldeskriftfondet from 1940 to 1945 and of the

Norwegian Genealogical Society Norwegian Genealogical Society ( no, Norsk Slektshistorisk Forening, NSF) is a genealogical society in Oslo, Norway. It was founded on 22 October 1926 as the first exclusively Norwegian genealogical society. Among the founders were Stian Herlofsen ...

from 1949. In private relations, he used the very conservative pre-1907 orthography. He died in 1975.

References

1900 births 1975 deaths People from Bærum University of Oslo alumni Norwegian archivists Norwegian encyclopedists Norwegian trade unionists 20th-century Norwegian writers {{Norway-academic-bio-stub