Dons was born on 18 August 1903 in Svanholm, Frederikssund, Denmark to Hans Bergishagen Dons (1849–1930) and Frede Henriette Gottlieb (1869–1957).
The provided text states that Don was born on August 18, 1903 in Svanholm, Frederikssund, Denmark. His parents were Hans Bergishagen Dons and Frede Henriette Gottlieb.