| Ferdinand Marcos I, 2nd Duke of Ilocos Ferdinand III | |
|---|---|
| Duke of Ilocos | |
| |
| Reign | December 21, 1961-August 3, 1986 |
| Inauguration | December 30, 1961 Malacanang Palace |
| Predecessor | Benigno II |
| Successor | Ferdinand VI |
| Prime Minister | Fidel Ramos |
| Tenure | December 21, 1961-August 3, 1986 |
| Predecessor | Mariano Marcos, 1st Duke of Ilocos |
| Successor | Ferdinand Marcos II, 3rd Duke of Ilocos |
| Consort | Imelda Romualdez |
| Issue | |
| Princess Imelda, Grand Princess of Luneta Ferdinand VI Princess Irene, Duchess of Guimaras Doña Aimee Marcos (Adopted) | |
| Full name | |
| Ferdinand Emmanuel Edralin Marcos | |
| House | Ilocos |
| Father | Mariano Marcos, 1st Duke of Ilocos |
| Mother | Josefa Edralin |
| Born | September 11, 1917 Marcos Castle, Sarrat, Ilocos, Philippines |
| Died | August 3, 1986 Manila, Philippines |
| Burial | September 11, 1986 Manila Cathedral |
| Religion | Roman Catholic |
Ferdinand III (born Ferdinand Marcos, 2nd Duke of Ilocos; September 11, 1917 – August 3, 1986) was King of the Philippines from December 21, 1961 to August 3, 1986. He is the 1st son and eldest child of Mariano Marcos, 1st Duke of Ilocos and Josefa Edralin.
During his reign, Ferdinand III is known to push for reform earning him the nickname Ferdinand the Reformer. His known advocacy is the amendment of the 1902 Constitution, transferring governmental power from the House of Nobles to the House of Deputies. Thus, establishing that the Prime Minister of the Philippines is chosen through the House of Deputies. As a result, this lead to a feud between opposition Grandees of House of Nobles and the royal House of Ilocos, leading to a coup d' etat against his son and successor, King Ferdinand IV; and the restoration of the House of Aquino as monarchs. Ferdinand is also responsible for abandoning the royal coronation and opting for an elegant yet simple inauguration ceremony. This change in tradition sets a precedence for the way future monarchs takes the throne, until Queen Kristina who returned the coronation tradition in 2016.