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 Greece and Denmark
Although the youngest of four sisters, Sophie was the first to wed, marrying her second cousin-once-removed Prince Christoph of Hesse (1901–1943) on 15 December 1930 in Kronberg, Berlin; she was 16. A younger son of Prince Frederick Charles of Hesse and Princess Margaret of Prussia, Christoph was a great-grandson of Queen Victoria through her eldest daughter Victoria, Princess Royal, wife of Frederick III, German Emperor. A director in the Third Reich's Ministry of Air Forces and a commander in the German Air Reserves, Christoph held the rank of "Oberführer" in the Nazi "SS". On 7 October 1943, he was killed in an airplane accident in a war zone of the Apennine mountains near Forlì, Italy. His body was found two days later.