Sweden Sverige All dates before 4 Oct 1582 are Old-Style (Julian); the dates between 4 Oct 1582 and 28 Feb 1753 are shown as pairs (Julian/Gregorian). Sources Notes Glossary Polity Style: 1250-2023 Heads of State: 1250-1364 Heads of State: 1364-1470 Heads of State: 1470-1523 Heads of State: 1523-1654 Heads of State: 1654-1751 Heads of State: 1751-1818 Heads of State: 1818-2023 Last updated on: 01 Jul 2020 21:00:00; URL: www.archontology.org/nations/sweden/index.php