Prince Baudouin of Belgium was the first child and eldest son of Prince Philippe, Count of Flanders, and his wife, Princess Marie of Hohenzollern-Sigmaringen. Wikipedia
Born: June 3, 1869, Brussels, Belgium
Died: January 23, 1891 (age 21 years), Brussels Agglomeration, Belgium
Great-grandparents: Louis Philippe I, Stéphanie de Beauharnais, Countess Augusta Reuss of Ebersdorf, and more
Grandparents: Leopold I of Belgium, Louise of Orléans, Karl Anton, Prince of Hohenzollern, and more
Siblings: Albert I of Belgium
Cousins
Prince Leopold, Duke of Brabant
via Prince Philippe, Count of Flanders
Princess Louise of Belgium
via Prince Philippe, Count of Flanders
Princess Clémentine of Belgium
via Prince Philippe, Count of Flanders
Princess Stéphanie of Belgium
via Prince Philippe, Count of Flanders
Lucien Philippe Marie Antoine Delacroix Durrieux
via Prince Philippe, Count of Flanders
Princess Maria of Romania
via Princess Marie of Hohenzollern-Sigmaringen