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.
Sophia Dorothea of Hanover
Sophia Dorothea of Hanover ( – 28 June 1757) was a Queen consort in Prussia as spouse of Frederick William I. She was the sister of George II, King of Great Britain and the mother of Frederick II, King of Prussia.