Background
He was a son of iron and steel wholesaler Ole Paus and Birgitte Halvordine Schou (a first cousin of industrialist Halvor Schou), and grew up at Bygdøy in Oslo.
He was a son of iron and steel wholesaler Ole Paus and Birgitte Halvordine Schou (a first cousin of industrialist Halvor Schou), and grew up at Bygdøy in Oslo.
He graduated from the Norwegian Military Academy in 1902, becoming a second lieutenant, and was promoted to first lieutenant in 1909.
He served as a secretary and commercial attaché at the Swedish-Norwegian and subsequently at the Norwegian Consulate-General in Vienna 1902–1910, and as Norwegian honorary Vice Consul, Consul and Consul-General between 1910 and 1918. He also served as an honorary Danish and Swedish Consul during the same period. From 1906 to 1918, he operated his own business as an agent in Vienna, representing Norwegian companies such as Norsk Hydro in Austria-Hungary.
After returning to Norway, he continued the business as Thorleif Paus A/South in Oslo, and became owner of two factories in Ålesund.
In 1936, he became owner of Kvesarum Castle in Scania, Sweden, where he lived for many years. He was the grandfather of the troubadour Ole Paus and the great-grandfather of the composer Marcus Paus.
He was the brother of businessman Christopher Blom Paus (1878–1959) and the brother-in-law of the historian of nobility Otto von Munthe af Morgenstierne, the businessman Trygve Andvord and the businessman (and distant relative) Nicolay Nissen Paus. In Austria-Hungary, his name was often alternately spelled Thorleif von Paus and Thorleif de Paus.