Succession
Elected king after the death of Christian IV.
Role range: 1648-1670
Historical biography archive · Updated 2026-11-03
Frederick III Biography and Timeline
Follow Frederick III through 9 dated historical records for Denmark.
Frederick III, historical timeline
A chronological timeline drawn from matching World History Database records.
9Distinct records
1 of 1Page
1648–1665Years on this page
1648
Peace of Westphalia
Begins reign as the Westphalian settlement changes north German politics.
Role range: 1618-1648 – 1648-1670
Peace of Westphalia
Begins ruling Denmark as the Westphalian settlement alters north German politics.
Role range: 1618-1648 – 1648-1670
1657
War with Sweden
Declares war on Sweden during the Northern Wars.
Role range: 1657-1660 – 1648-1670
1658
Treaty of Roskilde
Cedes major Danish territories to Sweden after military defeat.
Role range: 1657-1660 – 1648-1670
1659
Siege of Copenhagen
Helps defend Copenhagen against Swedish assault.
Role range: 1657-1660 – 1648-1670
1660
Absolute Monarchy
Uses political crisis to establish hereditary absolute monarchy.
Role range: 1648-1670
1661
Sovereignty Act
Receives formal recognition of hereditary sovereignty.
Role range: 1648-1670
1665
Battle of Bergen
Danish policy shapes the outcome when English ships attack a Dutch convoy at Bergen.
Role range: 1665-1667 – 1648-1670
Records, sources and methodology
These dates and descriptions come from the historical_events database. Exact duplicate records have been collapsed. Names are grouped by the country, Name 2 and Name 1 fields; records with missing Name 2 cannot be reliably assigned to an individual biography. Check the underlying sources before formal citation.