Leopold II of Belgium child Prince Leopold, Duke of Brabant
Princess Louise of Belgium, born in Brussels on 18 February 1858, and died at Wiesbaden on 1 March 1924. She married Prince Philipp of Saxe-Coburg and Gotha on 4 February 1875, they had two children and divorced on 15 January 1906.
Prince Leopold, Duke of Brabant, Count of Hainaut (as eldest son of the heir apparent), later Duke of Brabant (as heir apparent), born at Laeken on 12 June 1859, and died at Laeken on 22 January 1869, from pneumonia, after falling into a pond.
Princess Stéphanie of Belgium, born at Laeken on 21 May 1864, and died at the Archabbey of Pannonhalma in Győr-Moson-Sopron, Hungary, on 23 August 1945. She married (1) Crown Prince Rudolf of Austria, the heir apparent to the throne of Austria-Hungary. In 1889, he died in a suicide pact with his mistress, Baroness Mary Vetsera, at the Mayerling hunting lodge.  Stéphanie's second husband was (2) Elemér Edmund Graf Lónyay de Nagy-Lónya et Vásáros-Namény (created, in 1917, Prince Lónyay de Nagy-Lónya et Vásáros-Namény).
Princess Clémentine of Belgium, born at Laeken on 30 July 1872, and died at Nice on 8 March 1955. She married Prince Napoléon Victor Jérôme Frédéric Bonaparte (1862–1926), head of the Bonaparte family. The current head of the Imperial family, Jean-Christophe, Prince Napoléon is a direct descendant of King Leopold II.Leopold also fathered two sons by Caroline Lacroix. They were adopted in 1910 by Lacroix's second husband, Antoine Durrieux. Leopold granted them courtesy titles that were honorary, as the parliament would not have supported any official act or decree:
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