After cremation, their ashes were interred together at the cemetery Norra begravningsplatsen in Stockholm.
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Frænkel was born in Karlstad, son of a major in the Army engineering corps (väg- och vattenbyggnadskåren), and grew up in mountainous Jämtland in eastern middle part of Sweden, where he acquired an interest in outdoor activities and sports.
Knut Hamsun | Knut Wicksell | Knut Hamre | Knut Buen | Knut | Knut Schreiner | Knut Posse | Knut Kiesewetter | Knut Haavik | Knut Haakonsson | Knut Gjerset | Knut Anders Fostervold | Knut Vollebæk | Knut Værnes | Knut Storberget | Knut Seip | Knut Reiersrud | Knut Lystad | Knut Lundmark | Knut Kloster | Knut Johannesen | Knut Holmann | Knut Helle | Knut Haug | Knut Hamsun's | Knut Frydenlund | Knut Frænkel | Knut Erik Jensen | Knut Brynildsen | Knut Bergsland |
Swedenborg left for Paris in March 1897 together with Knut Frænkel where they received training in ballooning by Henri Lachambre, the manufacturer of the balloon "The Eagle" that was to be used in the polar expedition.