| ferdinand i | (n) Holy Roman Emperor and king of Hungary and Bohemia (1503-1564) |
| ferdinand i | (n) king of Castile and Leon who achieved control of the Moorish kings of Saragossa and Seville and Toledo (1016-1065), Syn. Ferdinand the Great |
| ferdinand ii | (n) Holy Roman Emperor and king of Bohemia and Hungary who waged war against Protestant forces (1578-1637) |
| ferdinand iii | (n) Holy Roman Emperor and king of Hungary and Bohemia who signed the Peace of Westphalia ending the Thirty Years' War (1608-1657) |