Ferdinand I
See:
- Ferdinand I of Leon, the Great (ca. 1000–1065, king from 1037)
- Ferdinand I of Portugal and the Algarves (1345–1383, king from 1367)
- Ferdinand I of Aragon and Sicily, the Just (1379–1416, king from 1412)
- Ferdinand I of Naples (ca. 1424–1494, king from 1458)
- Ferdinand I of Germany (1503–1564, king of Hungary and Bohemia from 1526, emperor from 1556)
- Ferdinand I of Tuscany (1549–1609, grand-duke from 1604)
- Ferdinand I of Parma, Plaisance and Guastalla (1751–1802, duke from 1765)
- Ferdinand I of the Two Sicilies (1751–1825, king of Naples from 1759, of 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 of Romania (1865–1927, king from 1914)
Categories: Disambiguation