Fridtjof Nansen particularly in the polar regions. The Nansen family originated in Denmark. Hans Nansen (1598–1667), a trader, was an early explorer of the White Sea region of the Arctic Ocean. In later life he settled in Copenhagen, becoming the city's "borgmester" in 1654. Later generations of the family lived in Copenhagen until the mid-18th century, when Ancher Antoni Nansen moved to Norway (then in a union with Denmark). His son, Hans Leierdahl Nansen (1764–1821), was a magistrate first in the Trondheim district, later in Jæren. After Norway's separation from Denmark in 1814, he entered national political life as the representative for
Fridtjof Nansen greatest test of its credibility. He was a signatory to the Slavery Convention of 25 September 1926, which sought to outlaw the use of forced labour. He supported a settlement of the post-war reparations issue and championed Germany's membership of the League, which was granted in September 1926 after intensive preparatory work by Nansen. On 17 January 1919 Nansen married Sigrun Munthe, a long-time friend with whom he had had a love affair in 1905, while Eva was still alive. The marriage was resented by the Nansen children, and proved unhappy; an acquaintance writing of them in the 1920s said