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 Central Oceanographic Laboratory in Christiania. Through his work on behalf of the League of Nations, Nansen helped to establish the principle of international responsibility for refugees. Immediately after his death the League set up the Nansen International Office for Refugees, a semi-autonomous body under the League's authority, to continue his work. The Nansen Office faced great difficulties, in part arising from the large numbers of refugees from the European dictatorships during the 1930s. Nevertheless, it secured the agreement of 14 countries (including a reluctant Great Britain) to the Refugee Convention of 1933. It also helped to repatriate 10,000 Armenians to