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.
Princess Sophie of Saxe-Hildburghausen
On 6 March 1776, she married at the age of 16 (in Hildburghausen) the Hereditary Prince (and later Duke) Francis Frederick Anthony of Saxe-Coburg-Saalfeld. At the time, Francis was already in love with his future wife Countess Augusta Reuss of Ebersdorf, but he was unable to break off his engagement with Sophie.