The Tree of Europe · Person

Pius IV

Giovanni Angelo Medici, from Milan and unrelated to the Florentine Medici, was pope from 1559 to 1565. He reopened and concluded the Council of Trent in 1562–1563; his nephew Charles Borromeo led his government.

1499 – 1565PopeMedici of Milan · ES

Explore this family · Spanish Atlas Back to people

Contemporary portraitPius IVCircle of Scipione Pulzone · 1560sPublic 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: 1499 Documented

Death: 1565 Documented

Role: Pope

Dynasty: Medici of Milan · ES

Territories: Papal States (ES)

Recorded governments and reigns

Pope · Papal States · Pontificate Documented1559–1565Effective rule

Family network

Recorded relationships

Parents

Bernardino Medici · ESPending reviewCecilia Serbelloni · ESPending review

Documentation

Sources for this profile

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

Evidence for this profile

5 recorded claims · 2 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)

BirthDocumented
1499
The authority record gives the birth as 1499.
Deutsche Nationalbibliothek · GND · Pius IV., Papst · Vital data: birth date
Reviewed on 2026-10-17 by El Árbol de Europa ·
DeathDocumented
1565
The authority record gives the death as 1565.
Deutsche Nationalbibliothek · GND · Pius IV., Papst · Vital data: death date
Reviewed on 2026-10-17 by El Árbol de Europa ·

Family and relationships (0/2 with a precise source)

FatherPending review
Bernardino Medici
A precise source has not yet been added.
No individual review recorded ·
MotherPending review
Cecilia Serbelloni
A precise source has not yet been added.
No individual review recorded ·

Governments (1/1 with a precise source)

GovernmentDocumented
Pope · Papal States · 1559–1565
The authority record dates this office to 1559–1565.
Deutsche Nationalbibliothek · GND · Pius IV., Papst · Biographical data: “Papst von 1559-1565”
Reviewed on 2026-10-17 by El Árbol de Europa ·

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.