In 1991 Thor Heyerdahl married for the third time, to Jacqueline Beer (b. This marriage also ended in divorce, in 1969. They in turn had three daughters Annette, Marian and Helene Elisabeth. The marriage ended in divorce and in 1949 Thor Heyerdahl married Yvonne Dedekam-Simonsen.

The couple had two sons Thor Jr and Bjørn. Though she is conspicuously absent from many of his papers and talks, Liv participated in nearly all of Thor's journeys, with the exception of the Kon-Tiki Expedition. 1916), whom he had met shortly before enrolling at the University, and who had studied economics there. Just before sailing together to the Marquesas Islands in 1936, he married his first wife, Liv Coucheron-Torp (b. He was to visit some isolated Pacific island groups and study how the local animals had found their way there. After seven terms and consultations with experts in Berlin, a project was developed and sponsored by his zoology professors, Kristine Bonnevie and Hjalmar Broch. This collection was later purchased by the University of Oslo Library from Kropelien's heirs and was attached to the Kon-Tiki Museum research department. At the same time, he privately studied Polynesian culture and history, consulting what was then the world's largest private collection of books and papers on Polynesia, owned by Bjarne Kropelien, a wealthy wine merchant in Oslo.

He studied Zoology and Geography at University of Oslo. He created a small museum in his childhood home, with a Vipera berus as the main attraction. As a young child, Thor Heyerdahl showed a strong interest in zoology. Thor Heyerdahl was born in Larvik, the son of master brewer Thor Heyerdahl and his wife Alison Lyng. All his legendary expeditions are shown in the Kon-Tiki Museum, Oslo. Heyerdahl became notable for his Kon-Tiki expedition, in which he sailed 4,300 miles (8,000 km) by raft from South America to the Tuamotu Islands. Thor Heyerdahl (October 6, 1914, Larvik, Norway – April 18, 2002, Colla Micheri, Italy) was a Norwegian ethnographer and adventurer with a scientific background in zoology and geography.

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