Prince Baudouin of Belgium (3 June 1869 – 23 January 1891), born in Brussels, was the first child and eldest son of Prince Philippe, Count of Flanders, and his wife, Princess Marie of Hohenzollern-Sigmaringen.
Baudouin was the nephew of Leopold II of Belgium.
Upon the death of Leopold, Duke of Brabant, Leopold II's eldest (and only) son, six months before Baudouin's birth, the king was left with only one person in the line of succession – Leopold II's younger brother, Prince Philippe, Count of Flanders.
Baudouin's birth in June 1869 was celebrated throughout the country.
He was second in line to the throne at the time of his birth, after his father.
Prince Baudouin was thus groomed to eventually succeed his uncle as king.
After Prince Baudouin's death, his younger brother, Albert, eventually became heir presumptive after the death of their father, and later succeeded their uncle Leopold II as Albert I of Belgium.