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 of Pomerania
Sophie of Pomerania (1498–1568) was queen of Denmark and Norway as the spouse of Frederick I. She is known for her independent rule over her fiefs Lolland and Falster, the castles in Kiel and Plön, and several villages in Holstein as queen.