Maximilian I (German: Ferdinand Maximilian Josef Maria von Habsburg-Lothringen, Spanish: Fernando Maximiliano José María de Habsburgo-Lorena; 6 July 1832 – 19 June 1867) was an Austrian archduke who reigned as the only Emperor of the Second Mexican Empire from 10 April 1864 until his execution on 19 June 1867. A member of the House of Habsburg-Lorraine, Maximilian was the younger brother of Emperor Franz Joseph I of Austria. He had a distinguished career as the Austrian viceroy of Lombardy–Venetia and the commander-in-chief of the Imperial Austrian Navy.
Alternate versions of Maximilian I of Mexico have been discovered throughout the multiverse: