Christian Ulrik Kastrup was a Norwegian jurist, military officer and politician.

A jurist by education, from Stavanger

Stavanger

Stavanger is a city and municipality in the county of Rogaland, Norway.Stavanger municipality has a population of 126,469. There are 197,852 people living in the Stavanger conurbation, making Stavanger the fourth largest city, but the third largest urban area, in Norway...

, he worked as a military officer until 1811, when he became chief of customs in Vardø

Vardø

is a town and a municipality in Finnmark county in the extreme northeast part of Norway.Vardø was established as a municipality on 1 January 1838 . The law required that all cities should be separated from their rural districts, but because of a low population and very few voters, this was...

. In 1817 he became fut

Vogt

A Vogt ; plural Vögte; Dutch voogd; Danish foged; ; ultimately from Latin [ad]vocatus) in the Holy Roman Empire was the German title of a reeve or advocate, an overlord exerting guardianship or military protection as well as secular justice...

in the district Nordhordland

Nordhordland

Nordhordland is a traditional district in the western part of Norway, consisting of the northern portion of the county of Hordaland. It includes the municipalities Austrheim, Fedje, Lindås, Masfjorden, Meland, Modalen, Osterøy, Radøy and Vaksdal....

 og Voss

Voss

is a municipality in Hordaland county, Norway. It is part of the traditional district of Voss. The administrative center of the municipality is the village of Vossevangen....

. He was elected to the Norwegian Parliament from Søndre Bergenhus in 1821, 1822 and 1824. Political parties did not exist at the time.

He became County Governor of Finnmark in 1828, of Rogaland in 1829 and of Nordre Bergenhus (now: Sogn og Fjordane) 1833. Originally governing from the market town of Bergen

Bergen

Bergen is the second largest city in Norway with a population of as of , . Bergen is the administrative centre of Hordaland county. Greater Bergen or Bergen Metropolitan Area as defined by Statistics Norway, has a population of as of , ....

, he moved to Lærdalsøyri

Lærdalsøyri

Lærdalsøyri is the administrative centre of the municipality of Lærdal in Sogn og Fjordane county, Norway. The village is located along the Lærdalselvi river where it empties into the Lærdalsfjord, a branch of the Sognefjord. The village is located about north of the east end of the Lærdal Tunnel...

in 1840, becoming the second Sogn og Fjordane county governor to actually live in the county. He held the position until 1844.