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.
Infanta Maria Doroteia of Portugal
Maria Doroteia of Braganza ("Maria Francisca Doroteia Josefa Antónia Gertrudes Rita Joana Efigénia"; 21 September 1739 – 14 January 1771), was a Portuguese "infanta" daughter of King Joseph I of Portugal and his wife Mariana Victoria of Spain.