He was born on 20 February 1898 in Sopron, Hungary as the only son and second child of Frederick of Schaumburg-Lippe (1868–1945) and his first wife Princess Louise of Denmark, younger sister of King Christian X of Denmark.

He was also briefly considered as a marriage candidate for Princess Juliana, the heiress to the Dutch throne.

Although his reputation as a womanizer, his previous called off engagement and his German heritage did not make him a popular choice, he was reconsidered after other candidates were rejected by the Queen or Juliana herself.

On 9 September 1937, he married his cousin, Princess Feodora, daughter of his maternal uncle Prince Harald of Denmark who was a younger brother of King Christian X and Princess Louise, at Fredensborg Palace, Zealand, Denmark;[2][3][4] they had four children.

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