Hjalmar Hammarskjöld 20th-century prime minister of Sweden (1862-1953) (1862–1953) Parents Maria Lovisa Cecilia Wilhelmina Cöster Knut Wilhelm Hammarskjöld Children Dag Hammarskjöld Åke Hammarskjöld Bo Hammarskjöld Sten Hammarskjöld Siblings Carl Gustaf Hammarskjöld Partners Agnes Maria Carolina Almquist
