Charles III *Charles the Fat* King of West Francia and Aquitaine, Emperor or the Romans, King of Italy & King of East Francia & Alemannia Son of Louis II and Emma of Altdorf. Husband to Richardis of Swabia
Casimir I the Restorer (Polish: Kazimierz I Odnowiciel; Kraków, 25 July 1016 – d. Poznań, 28 November was a Duke of Poland of the Piast dynasty and the de facto monarch of the entire country from 1034 until his death.
Tomislav was a ruler of Croatia in the Middle Ages. He reigned from around 910 until first as a duke (Latin: dux Croatorum) of the Duchy of Croatia, and then became the first king (rex Croatorum) of the Croatian Kingdom by the year 925
The May Overthrow (Serbian: Мајски преврат, Majski prevrat) was a coup d'état in which Serbian King Alexander Obrenović and his wife, Queen Draga, were assassinated inside the Royal Palace in Belgrade on the night of 28-29 May 1903 by the Julian calendar (10-11 June by the Gregorian calendar). This act resulted in the extinction of the House of Obrenović which had been ruling Serbia since the middle of the 19th century.