We have discussed Napoleon 1st’s step children…

… the children of his first wife, Josephine.  Napoleon adopted step-son Eugene, and Eugene’s lineage included his many children who populated many countries.

Hortense married Napoleon’s brother.

(Featured:  brother/sister Hortense and Eugene de Beauharnais, children of Empress Josephine and adopted by Napoleon 1st)(Below: Napoleon and Josephine)