Prince Sigismund of Prussia (1864–1866)

This page is about the Prince Sigismund born in 1864. For his nephew and namesake born in 1896, see Prince Sigismund of Prussia (1896-1978)

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For other nobles of the same name, please see Sigismund.

Prince Sigismund of Prussia (Franz Friedrich Sigismund) (September 15, 1864–June 18, 1866) was the fourth child of Crown Prince Frederick William of Prussia (later German Crown Prince and then German Emperor as Frederick III), and Victoria, Princess Royal a daughter of the British Queen Victoria.

He was born at the New Palace in Potsdam, Germany, in 1864. His mother found him much cleverer and more intelligent than his three elder siblings and believed he would have great potential when he grew up. However, he died from meningitis at the New Palace on June 18, 1866, aged twenty-one months. He was buried in the royal mausoleum of the Friedenskirche at Potsdam. His mother's grief and despair were intense, as his father, leading the Prussian army into battle against Austria, had taken away all the available doctors thus making it impossible for her to alleviate the suffering of her child or to prevent his death, the memory of which would haunt her for the rest of her life.