qnli question: Who was the child of Emilie Victoria Kraus who might have been another of Napoleon's illegitimate children? sentence: 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.