Original: Dag Hjalmar Agne Carl Hammarskjöld () (29 July 1905 - 18 September 1961) was a Swedish diplomat and author and was the second Secretary-General of the United Nations.
Simplified: Dag Hammarskjold (Swedish: Dag Hjalmar Agne Carl Hammarskjöld) (29 July 1905 18 September 1961) was a Swedish diplomat and the second Secretary-General of the United Nations.