Interregnum 1383-1385
House of Aviz[?] 1385-1580
Habsburg
House of Braganza[?] 1640-1807
House of Braganza, Restored 1814-1910
The chronology continues on Presidents of Portugal
See also: History of Portugal -- Lists of incumbents
... power for any period of time without a legitimate basis of authority. The first to have the title of "Tyrant" was Pisistratus in 560 BC. In modern times Tyrant ...