Franz Joseph I of Austria
Franz Joseph I or Francis Joseph I (Franz Joseph Karl; 18 August 1830 – 21 November 1916) was Emperor of Austria, King of Hungary, and monarch of many other states of the Austro-Hungarian Empire, from 2 December 1848 to his death. From 1 May 1850 to 24 August 1866 he was also President of the German Confederation. He was the longest-reigning Emperor of Austria and King of Hungary, as well as the third-longest-reigning monarch of any country in European history, after Louis XIV of France and Johann II of Liechtenstein.
History of Hungary
The Magyars were Christianized at the end of the 10th century, and the Christian Kingdom of Hungary was established in AD 1000, 
ruled by the Árpád dynasty for the following three centuries.
In the high medieval period, the kingdom expanded beyond Pannonia, to the Adriatic coast. In 1241 during the reign of Béla IV, Hungary was invaded by the Mongols under Batu Khan. The Hungarians were decisively defeated at the Battle of Mohi by the outnumbered Mongol army. King Béla fled to the Holy Roman Empire and left the Hungarian population under the mercy of the Mongols. In this invasion more than 500,000 Hungarian population were massacred and the whole kingdom reduced to ashes.
After the extinction of the Árpád dynasty in 1301, the late medieval kingdom persisted, albeit no longer under Hungarian monarchs, and gradually reduced due to the increasing pressure by the expansion of the Ottoman Empire. Hungary bore the brunt of the Ottoman wars in Europe during the 15th century. The peak of this struggle took place during the reign of Matthias Corvinus (r. 1458–1490). The Ottoman–Hungarian wars concluded in significant loss of territory and the partition of the kingdom after the Battle of Mohács of 1526.