Eugene, step-son of Napoleon I and son of Josephine, had 7 children with wife Augusta Amalia of Bavaria.
Their first was a daughter, Josephine Maximilian (named after her maternal grandfather) Eugenie Napoleonine de Beauharnais.
She became Queen of Sweden and Norway when she married King Oscar of Sweden. Napoleon I was THRILLED with this union, because not only was King Maximilian her grandfather his best buddy, but King Oscar was the illegitimate son of Napoleon and his mistress Desiree Clary!
(portrait: Josephine, called Josefin, Queen of Sweden and Norway in the 1830’s)