Nils Johannes Sejerstad was a Norwegian military officer and director.

He was a son of Fredrik Christian Sejersted (1833–1882), Lieutenant Colonel

Lieutenant colonel

Lieutenant colonel is a rank of commissioned officer in the armies and most marine forces and some air forces of the world, typically ranking above a major and below a colonel. The rank of lieutenant colonel is often shortened to simply "colonel" in conversation and in unofficial correspondence...

 and director of the Norwegian Mapping and Cadastre Authority (then known as Norges Geografiske Oppmåling). Himself, Nils Johannes Sejerstad became director of Mapping and Cadastre Authority too, and held the military rank of Colonel

Colonel

Colonel , abbreviated Col or COL, is a military rank of a senior commissioned officer. It or a corresponding rank exists in most armies and in many air forces; the naval equivalent rank is generally "Captain". It is also used in some police forces and other paramilitary rank structures...

. He died in the Nidareid train disaster

Nidareid train disaster

The Nidareid train disaster was a train collision on 18 September 1921 on the Trondhjem-Størenbanen railway line, between the stations of Marienborg and Skansen in Trondheim, Norway. The accident occurred the day after the inauguration of the new line to Trondheim, Dovrebanen, and one of the trains...

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He was a grandfather of Francis Sejersted

Francis Sejersted

Francis Sejersted is a Norwegian history professor and former chairman of the Norwegian Nobel Committee.Sejersted was educated in history as well as nordic language and literature at the University of Oslo and achieved a candidatus philologiæ in 1965 and a doctorate in 1973.From 1971 to 1973...

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