Prince Sigismund of Prussia (1864–1866)

Prince Sigismund of Prussia was the fourth child and third son of the Crown Prince and Crown Princess of Prussia, later German Emperor Frederick III and Empress Victoria. He was a grandson of William I of Prussia and Victoria, Queen of the United Kingdom.

15 September 1864

Born on the same birth day (15 September): Betty Neels • Endel Lippmaa • Ernest Bullock • Ettore Bugatti • Jason Terry • Jean-Baptiste Vaquette de Gribeauval • Matt Shively • Queen Letizia of Spain • Renzo Rosso • Robert Lucas Jr. • Sophia Dorothea of Celle • Stephen C. Spiteri • Terry Lamb • Viktor Zubkov • Željka Antunović

Born in the same month (September 1864): Akashi Motojiro • Andrej Hlinka • Carl Correns • James Tancred • Miguel de Unamuno • Mykhailo Kotsiubynsky • Robert Cecil, 1st Viscount Cecil of Chelwood