Louis I, Grand Duke of Hesse
In 1776, he became engaged to Sophie Dorothea of Württemberg, eldest daughter of Frederick II Eugene, Duke of Württemberg. The engagement was broken off so that Sophia Dorothea could marry Louis's recently widowed brother-in-law Tsarevich Paul Petrovich, son and heir of Catherine II "the Great", Empress of Russia. He received a monetary compensation when the engagement was broken.
Maria Sophia of Neuburg
Maria Sophia was born at the Schloss Benrath outside Düsseldorf in what is now Germany. Her father Philip William was the reigning Count Palatine of Neuburg. In 1685 he became Elector Palatine following the death of his cousin Charles II, an inheritance that greatly increased the family's status within Europe. In December 1676, Maria Sophia's sister Eleonore Magdalene was married to Holy Roman Emperor Leopold I owing to the family's reputation as producing fertile women. After two marriages, Leopold had no living male heirs. The new Empress Eleonore Magdalene fulfilled her function and quickly mothered two future Holy Roman Emperors (Joseph I and Charles VI).