Franz Joseph I of Austria

Franz Joseph took the crown in December 1848 when his uncle abdicated to crush the Hungarian uprising, inheriting an empire already cracking. He married his first cousin Elisabeth in 1854 and had four children, then spent his early decades resisting reform while losing ground: Italy stripped away Lombardy-Venetia, Prussia claimed the German future he wanted for Habsburg. In 1867 he cut the deal that created Austria-Hungary, granting Hungary autonomy to hold the structure together. The next 45 years brought quiet rule and catastrophic personal loss - his brother executed in Mexico, his son Rudolf dead by suicide in 1889, his wife assassinated in Geneva in 1898, his nephew Franz Ferdinand shot in Sarajevo in 1914. That last murder pulled the trip wire: Austria-Hungary declared war on Serbia, the alliances lit up, and the Great War began. Franz Joseph died in November 1916, two years into the collapse, the empire surviving him by less than twenty-four months.