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 Hohenberg
Princess Sophie was born on 24 July 1901 at Konopiště chateau, in Austria-Hungary, (now the Czech Republic), fifty kilometres south-east of Prague. This chateau, situated in Bohemia, was the favourite home of the Archduke and his wife. On 29 September 1902, the couple's first son, Maximilian, was born. A second son, Ernst, followed on 17 May 1904. In 1908, the Archduke's wife became pregnant again, but the fourth child, a boy, was stillborn on 7 November 1908.