Empress Napoleon, also known as Mary Louise of Austria, was part of an incredibly inbred family. When Napoleon struggled to provide an heir with his first wife, Josephine, he forced Josephine's daughter to marry his brother. This meant that his stepson was also his brother. However, the most inbred member of the Napoleonic family was Napoleon's second wife, Empress Napoleon. Born as Maria Ludovica Leopoldina Franziska Therese Josepha Lucia, Mary Louise hailed from the House of Habsburg, a family known for its extensive history of intermarriage and consanguinity. In the case of Mary Louise, her parents were double first cousins, intensifying the level of shared ancestry within her immediate family.
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