Franz Joseph I of Austria reigned as the Emperor of Austria from 1848 until his death in 1916. He also served as the King of Hungary, Bohemia, and Croatia and monarch of other states of Austria-Hungary. During his reign, Austria-Hungary decided to wage war against the Kingdom of Serbia, which eventually resulted in the First World War.
Maximilian I was Holy Roman Emperor from 1508 until his death in 1519. The son of Frederick III, Holy Roman Emperor, and Eleanor of Portugal, he ruled jointly with his father for the last years of the latter’s reign. During his reign, he expanded the influence of the House of Habsburg and established the Habsburg dynasty in Spain.
Leopold II, Holy Roman Emperor reigned as king of Archduke of Austria, emperor of the Romans, and king of Hungary and Bohemia from 1790 until his death in 1792. From 1765 to 1790, he served as Grand Duke of Tuscany, during which he abolished capital punishment in Tuscany, making it the first nation to abolish capital punishment in modern history.
Much before his daughter Maria Theresa’s birth, Emperor Charles VI’s Pragmatic Sanction enabled his future daughter to succeed him, due to the lack of male heirs. Though he was always busy fighting, he apparently did it all to bring about peace. He had also unsuccessfully attempted to conquer Spain.
Ferdinand I of Austria reigned as the Austrian emperor from 1835 until his retirement in 1848. As the emperor of Austria, Ferdinand also ruled as the king of Croatia, Hungary, and Bohemia. He also served as the king of Lombardy–Venetia and held several other lesser titles, which any emperor of Austria is entitled to hold.
Ferdinand II was the Holy Roman Emperor from 1619 to1637. He was a member of the House of Habsburg and the son of Archduke Charles II of Inner Austria and Maria of Bavaria. A zealous Catholic, he wanted to restore the Catholic Church as the only religion in the empire, a move that earned him the ire of Protestant groups.
Otto of Greece was a Bavarian prince who reigned as the king of Greece from 1832 to 1862. He was largely unpopular throughout his reign as he failed to resolve Greece's poverty. He was deposed in 1862 and died in exile in 1867.