The Tree of Europe · Person

Constance of Sicily

Daughter of Manfred and wife of Peter III, she maintained the dynastic connection between the Hohenstaufen and the new island monarchy. The Sicilian Vespers made that inheritance politically decisive. Her sons James and Frederick illustrate how Aragon and Sicily could share a dynasty while having different rulers.

1249 – 1302ConsortHohenstaufen · ES

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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: 1249 Disputed

Death: 1302 Documented

Role: Consort

Other recorded names: Constanza de Hohenstaufen · Constanza de Sicilia, reina de Aragón

Dynasty: Hohenstaufen · ES

Territories: Aragon (ES) · Trinacria (ES)

Family network

Recorded relationships

Parents

Manfred of SicilyPending reviewBeatrice of Savoy · ESPending review

Partners

Peter III of AragonPending review

Children

James II of AragonElizabeth of Aragon · ESViolant of Aragon and Sicily · ESAlfonso III of AragonFrederick II of Sicily

Documentation

Sources for this profile

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

Evidence for this profile

5 recorded claims · 3 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)

BirthDisputed
1249
The DBI places her birth between 1249 and 1250; the DBE gives 1248 and the GND record 1247.Recorded alternatives: 1250 (DBI) · 1248 (DBE) · 1247 (GND)
Treccani · Dizionario Biografico degli Italiani · Costanza di Svevia, regina d'Aragona e di Sicilia · Vol. 30 (1984). “Nacque tra il 1249 e il 1250”Real Academia de la Historia · Diccionario Biográfico español · Constanza de Sicilia (I) · Heading: “1248 – 1302”Deutsche Nationalbibliothek · GND authority record · Vital data: birth date (1247)
Reviewed on 2026-10-17 by El Árbol de Europa ·
DeathDocumented
1302
The authority record gives the death as 1302.
Deutsche Nationalbibliothek · GND · Costanza, Aragonien, Königin · Vital data: death date
Reviewed on 2026-10-17 by El Árbol de Europa ·

Family and relationships (0/3 with a precise source)

FatherPending review
Manfred of Sicily
A precise source has not yet been added.
No individual review recorded ·
MotherPending review
Beatrice of Savoy
A precise source has not yet been added.
No individual review recorded ·
Marriage or partnershipPending review
Peter III of Aragon
A precise source has not yet been added.
No individual review recorded ·

Biographical and contextual references (4)

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.

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Story · Spanish original

The kingdom divided in two

Hohenstaufen, Anjou and Aragon contend for Sicily and Naples

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