The Tree of Europe · Person

Costanza d’Avalos

A duchess of the House of Avalos whose life was connected with Naples and Ischia.

1460 – 1541Duchess / RulerAvalos · ES

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: 1460 Pending review

Death: 1541 Pending review

Role: Duchess / Ruler

Dynasty: Avalos · ES

Territories: Naples (ES) · Ischia (ES)

Family network

No direct relationships are recorded for this person.

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

Dates (0/2 with a precise source)

BirthPending review
1460
A precise source has not yet been added.
No individual review recorded ·
DeathPending review
1541
A precise source has not yet been added.
No individual review recorded ·

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.