Napoleon
Napoleon acknowledged one illegitimate son: Charles Leon (1806-1881) by Eleonore Denuelle de La Plaigne. Alexandre Colonna-Walewski (1810-1868), the son of his mistress Maria Walewska, although acknowledged by Walewska's husband, was also widely known to be his child, and the DNA of his direct male descendant has been used to help confirm Napoleon's Y-chromosome haplotype. He may have had further unacknowledged illegitimate offspring as well, such as Eugen Megerle von Muhlfeld by Emilie Victoria Kraus and Helene Napoleone Bonaparte (1816-1907) by Albine de Montholon.
Who was Napoleon's illegitimate son by his mistress, Maria Walewska?
Alexandre Colonna-Walewski
Alexandre Colonna-Walewski (1810-1868), the son of his mistress Maria Walewska, although acknowledged by Walewska's husband, was also widely known to be his child, and the DNA of his direct male descendant has been used to help confirm Napoleon's Y-chromosome haplotype.
Napoleon