Jonas Wærn

In 1939, Wærn married the royal housekeeper Lissie Ehnström (1916–2012), the daughter of Axel Ehnström and Stina Larsdotter. He was the father of Stina (born 1942), Olof (born 1944), Peder (born 1950) and Lotta (born 1957). Wærn died on 6 November 2003 and was buried on 12 December 2003 in the family grave at Norra begravningsplatsen in Solna Municipality.

Wærn was a member of the Samfundet SHT and of the Charles John Association (Karl Johans förbundet). In 1974 he was appointed cabinet chamberlain. Wærn continue to be active at the court as governor of Gripsholm Castle and Strömsholm Palace from 1975 to 1983. In 1976 he received a Bachelor of Arts degree. In spring 1998, the TV program Röda rummet did a viewing poll about the century's most significant Swedish books. Wærn's book about Katanga was placed in 84th place out of 100 titles.

He was a colonel and commander of the twelfth and fourteenth Swedish UN battalion in Congo from 1961 to 1962. At the same time, he was brigade commander of the Swedish, Indian and Irish troops in southern Katanga, which was part of the United Nations Operation in the Congo (ONUC) from June 1961 to May 1962. Wærn was the section chief of the IV Military Commanding Staff in 1962 and was commander of the Swedish UN Battalion in Cyprus in 1964, part of the United Nations Peacekeeping Force in Cyprus (UNFICYP). He was infantry commander of the Stockholm Coastal Artillery Defense (Stockholms kustartilleriförsvar) in 1966.

Wærn became a reserve officer in 1936 and an officer in 1940. He was commissioned as an officer into Värmland Regiment (I 2) in 1941. During World War II he served as a ranger platoon leader at the Norway–Sweden border. He attended the Royal Swedish Army Staff College in 1947 and was deputy military attaché in Copenhagen in 1948 and was second teacher at the Swedish Infantry Combat School the same year. Wærn attended the School of Infantry in Warminster, England in 1950 and served at Värmland Regiment (I 2) in 1951. Wærn served at the Army Staff in 1955 and at Västerbotten Regiment (I 20) in 1956 and became major the same year. He was first teacher at Infantry Combat School in 1957 and the same year he was appointed adjutant to Gustaf VI Adolf of Sweden.

Colonel Carl Jonas Wærn (23 July 1915 – 6 November 2003) was a Swedish Army officer who led Swedish, Irish, and Indian peacekeeping troops in the Congo Crisis. He also commanded Swedish forces on Cyprus in 1964. Later, he served as adjutant to Gustaf VI Adolf of Sweden.

Wærn was born on 23 July 1915 in Spånga, Sweden, the son of lawyer Olof Wærn and the journalist Gerd Ribbing (née Rehn). He passed studentexamen in 1934.