Portugal Sources Polity Style: 1815-2023 Rulers: 1095-1140 Kings, Queens and Regents: 1140-1580 Kings: 1580-1640 Kings and Queens: 1640-1826 Kings and Queens: 1826-1910 Heads of State: 1910-1974 Heads of State: 1974-2023 Heads of Government: 1910-1974 Heads of Government: 1974-2023 Last updated on: 16 Oct 2019 21:00:00