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.
Sophie Marie of Hesse-Darmstadt
On 9 February 1681 in Darmstadt, she married Duke Christian of Saxe-Eisenberg. At the time, he was a widower and father of a daughter. He had become the first Duke of Saxe-Eisenberg when Saxe-Gotha had been divided by Christian and his six brothers the year before. They had no children and Christian died without leaving an heir. A dispute erupted among the remaining brothers and their descendants about he inheritance of Saxe-Eisenberg.