Birth Name: Knut Hjalmar Leonard Hammarskjöld
Date of Birth: 4 February 1862
Place of Birth: Tuna, Kalmar County, Sweden
Date of Death: 12 October 1953
Place of Death: Stockholm, Sweden
Ethnicity: Swedish, some German (including Baltic German), distant Scottish, as well as remote Finnish, Belgian [Flemish and Walloon], Danish, Dutch, English, and Russian
Hjalmar Hammarskjöld was a Swedish politician. He served as the Prime Minister of Sweden, from 17 February 1914 to 30 March 1917.
He was the son of Maria Lovisa Cecilia “Mimmi” Wilhelmina (Coster) and Knut Wilhelm Hammarskjöld.
Prime Minister Hammarskjöld was married to Agnes Maria Carolina Almquist, until her death. They had four children, the youngest of whom was economist and diplomat Dag Hammarskjöld, who served as the second Secretary-General of the United Nations, from 10 April 1953 to 18 September 1961.
Prime Minister Hammarskjöld’s paternal grandfather was Carl Åke Hammarskjöld (the son of Carl Gustaf Hammarskjöld and Catharina Mariana Breitholtz). Carl Åke was born in Tuna, Kalmar. Carl Gustaf was the son of Carl Hammarskjöld and Catharina Planting-Bergloo. Catharina Mariana was the daughter of Claes Didrik Breitholtz and Eleonora Andersdotter von Koskull.
Prime Minister Hammarskjöld’s paternal grandmother was Charlotta Eleonora Rääf (the daughter of Leonard Henrik Rääf and Hedvig Charlotta Grönhagen). Charlotta Eleonora was born in Tommestorp, Kisa, Östergötland. Leonard Henrik was the son of Adam Johan Rääf and Brita Greta Oldenburg. Hedvig Charlotta was the daughter of Adam Fredrik Grönhagen and Ulrika Charlotta von Olthoff.
Prime Minister Hammarskjöld’s maternal grandfather was Fredrik Bernhard Cöster (the son of Hans Peter Cöster and Beata Maria Agrell). Fredrik Bernhard was born in Halmstad, Halland. Hans Peter was the son of Fredrik Vilhelm Cöster and Katarina Cecilia Cöster. Beata Maria was the daughter of Olof Bernhard Agrell and Benedikta Christina Schough.
Prime Minister Hammarskjöld’s maternal grandmother was Ebba Eleonora Charlotta Iserhielm (the daughter of Carl Johan Iserhielm and Lovisa Gustava von Köhler). Ebba was born in Stockholm. Carl Johan was the son of Carl Vilhelm Iserhielm and Ulrika Eleonora von Kochen. Lovisa Gustava was the daughter of Axel Johan von Köhler and Carolina Brita Carleson.
Source: Genealogy of Hjalmar Hammarskjöld – https://www.geni.com
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