Ferdinand I

See:

Ferdinand I of Castile and Leon (ca. 1000-1065, king from 1037)
Ferdinand I of Aragon (1379-1416, king from 1412)
Ferdinand I of Naples (ca. 1424-1494, king from 1458)
Ferdinand I of Germany (1503-1564, emperor from 1556)
Ferdinand I of the Two Sicilies (1751-1829, king of Naples from 1759)
Ferdinand I of Austria (1793-1875, emperor from 1835)
Ferdinand of Romania (1865-1927, king from 1914)
Ferdinand of Bulgaria (1861-1948)

This is a disambiguation page; that is, one that points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.