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The Tree of Europe · Person

Frederick IV of Denmark

King of Denmark and Norway from 1699 to 1730. He fought Sweden in the Great Northern War and acquired the Gottorp part of Schleswig in 1720.

1671 – 1730KingOldenburg · ES
Explore this family · Spanish AtlasBack to people
Portrait of Frederick IV of Denmark
Historical portraitPortrait of Frederick IV of DenmarkBalthasar Denner · 1700–1748Public domain · PDM 1.0 · Source

This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.

Historical profile

Key details

Birth: 21 October 1671 Documented

Death: 12 October 1730 Documented

Role: King

Dynasty: Oldenburg · ES

Territories: Denmark (ES) · Norway (ES) · Schleswig (ES)

Recorded governments and reigns
King · Denmark · Reign Pending review1699–1730Effective rule
King · Norway · Reign Pending review1699–1730Effective rule
Duke · Schleswig · Duchy Documented1721–1730Effective ruleCrown government over the duchy legally reunited in 1721. Ducal laws and institutions continued; earlier Gottorp territories are included only from incorporation.
Family network

Recorded relationships

Parents
Partners
Children
Crowns and unions

Their titles over time

Follow the changing territories and offices of Frederick IV of Denmark. Each title retains its own status.

Governments in 1721

  • Denmark–Norway2 titles and offices
    View titles and jurisdictions

    Common monarchical direction from the reorganisation of 1536–1537. Its scope excludes Sweden, the Gottorp duchies and earlier Nordic unions based on kinship or claims. Source for this grouping

  • SchleswigDuke
    View titles and jurisdictions
    • Schleswig · ESDuke · Effective rule1721–1730 · Crown government over the duchy legally reunited in 1721. Ducal laws and institutions continued; earlier Gottorp territories are included only from incorporation.

Annual dates: overlap within one year does not prove that two offices were held on the same day. Regencies and co-rulerships retain their labels.

Documentation

Sources for this profile

Biographical and contextual references in their original language. Sources and methodology.

Evidence for this profile

8 recorded claims · 4 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)
Family and relationships (1/3 with a precise source)
  • FatherDocumented

    Christian V of Denmark

    The authority record identifies Christian V of Denmark (GND 119175800) as father.
    Deutsche Nationalbibliothek · GND · Friedrich IV., Dänemark, König · Relationships: father → GND 119175800
    Reviewed on 2026-10-17 by El Árbol de Europa ·
  • MotherPending review

    Charlotte Amalie of Hesse-Kassel

    A precise source has not yet been added.
    No individual review recorded ·
  • Marriage or partnershipPending review

    Louise of Mecklenburg-Güstrow

    A precise source has not yet been added.
    No individual review recorded ·
Governments (1/3 with a precise source)
Biographical and contextual references (3)
Editorial history
  • 2026-10-12 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-08 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-10-03 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
  • 2026-09-30 · The duchy is limited to Dijon and Autun; each other fief now enters the map only under its dated ruler. John III of Namur and the Nevers/Rethel branch were added. The previous shape combined later counties and unrelated lands as if all belonged to the duchy from 1363.
  • 2026-09-28 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.

Keep exploring

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