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
After the betrothal of Wilhelmine and the Prince of Bayreuth, a message arrived in which George II consented to Wilhelmine marrying the Prince of Wales without her brother marrying his daughter Amelia. This message made the queen convinced that there was still a possibility of concluding a Prussian-British marriage alliance, and she therefore made a point to demonstratively harass the Prince of Bayreuth to stop the wedding. Even on the day of the wedding itself on 20 November 1731, Sophia Dorothea tried to delay the ceremony by disarranging her daughter's hair every time it had been dressed, saying she was not satisfied with the effect, in the hope that an English courier might arrive in time to stop the ceremony.