Editing Ferdinand I (section)

==People==
* [[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 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)
* [[Azim ud-Din I of Sulu]], briefly converted to Christianity under the name Ferdinand I (r. 1735–1748 and 1764–1774)
* [[Ferdinand I, Duke of Parma]], Piacenza and Guastalla (1751–1802, duke from 1765)
* [[Ferdinand I of the Two Sicilies]] (1751–1825, king of Naples and Sicily from 1759, king of the Two Sicilies from 1816)
* [[Ferdinand I of Austria]] (1793–1875, emperor 1835–1848)
* [[Ferdinand I of Bulgaria]] (1861–1948, prince 1887–1908, tsar 1908–1918)
* [[Ferdinand I of Romania]] (1865–1927, king from 1914)