Haagen Mathiesen

He was the son of timber merchant and judge Jørgen Mathiesen (1725–1764) and his wife Karen Haagensdatter Nielsen (1735–1766).

He soon involved himself in the Monsen family business, as a timber merchant and ship-owner, and bought the share of his father-in-law in 1797.

In 1802 he inherited Linderud Manor previously owned by Mogens Larsen Monsen.

[1] Unlike many others, Mathiesen survived the Gunboat War (1807–1814) economically, and stood out as one of the wealthiest persons in Christiania around 1814.

Francis Sejersted has noted that Mathiesen followed the principle "ubi bene ibi patria".

[3] During the period in Denmark, his business was overseen by manager Christopher Henrik Holfeldt Tostrup.