Ferdinand I

Ferdinand I or Fernando I may refer to:

Ferdinand I of León, the Great (ca. 1000–1065, king from 1037)
Ferdinand I of Portugal and the Algarve, the Handsome (1345–1383, king from 1367)
Ferdinand I of Aragon and Sicily, of Antequera (1379–1416, king from 1412)
Fernando I, Duke of Braganza (1403 – 1478)
Ferdinand II of Aragon, the Catholic (1452–1516, king from 1479)
Ferdinand I of Naples (ca. 1424–1494, king from 1458)
Ferdinand I, Holy Roman Emperor (1503–1564, king of Hungary and Bohemia from 1526, emperor from 1556)
Ferdinando I de' Medici, Grand Duke of Tuscany (1549–1609, grand-duke from 1604)
Ferdinand, Duke of Mantua and Montferrat (1587–1626)
Ferdinand I of Parma, Piacenza and Guastalla (1751–1802, duke from 1765)
Ferdinand IV of Naples (1751–1825, king of Naples from 1759, ruled as Ferdinand I of the Two Sicilies from 1816)
Ferdinand I of Austria (1793–1875, emperor 1835–1848)
Ferdinand of Bulgaria (1861–1948, prince 1887–1908, tsar 1908–1918)
Ferdinand I of Romania (1865–1927, king from 1914)

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