[1] Princess Sophie was born on 24 July 1901 at Konopiště chateau, in Austria-Hungary (now the Czech Republic), fifty kilometres south-east of Prague.

He wanted his sons to lead the uncomplicated life of a country squire, while he intended that his daughter, Sophie, would be happy at the side of a socially-suitable partner whom she loved.

[5] After the assassination of her parents, Sophie and her two surviving brothers, Maximilian and Ernst, were taken in by their mother's brother-in-law and their father's close friend and shooting partner, Prince Jaroslav von Thun und Hohenstein.

They had four children: In 1938, following the Anschluss (the union of Austria and Germany under Adolf Hitler), her brothers Maximilian and Ernst were arrested by the Gestapo as a result of making anti-Nazi statements and deported to Dachau concentration camp.

The letter was delivered personally to Čabrinović in his cell at Theresienstadt, in Bohemia, by the Jesuit Father Anton Puntigam, who had given the last rites to Franz Ferdinand and his wife.

[8] A fictional version of Princess Sophie, played by Danish actress Amalie Ihle Alstrup, appeared in "Vienna, November 1908", an episode of The Young Indiana Jones Chronicles later re-edited to form half of The Perils of Cupid.