Launch app →

Europe · The early medieval west

Giudicato of Arborea

drawn on the map AD 866–1421

The longest-lived judicate (Sardinian Judicadu de Arbaree), capital at Tharros then Oristano (from 1070). Under the Serra-Bas (Cervera) dynasty it became the champion of Sardinian independence against Aragon.

See it on the map → Wikipedia ↗
Shown on the map
AD 866–1421
Peak area
26k km²
Region
Europe

Overview

The longest-lived judicate (Sardinian Judicadu de Arbaree), capital at Tharros then Oristano (from 1070). Under the Serra-Bas (Cervera) dynasty it became the champion of Sardinian independence against Aragon. Mariano IV (r. 1347–1376) expanded Arborea to control nearly the whole island and began codifying Sardinian law (a Rural Code, and a civil/penal code c. 1365–1376). His daughter Eleanor of Arborea (giudicessa 1383–1404) is Sardinia's national heroine. The Aragonese conquest was resisted for decades, but the defeat at the Battle of Sanluri (30 June 1409) — where the Aragonese-Sicilian army of Martin I of Sicily crushed the Arborean forces of William III of Narbonne — broke Arborea. The last claim was sold to Aragon and the judicate dissolved in 1420.

The Carta de Logu (contested authorship/date)

Arborea's enduring monument is the Carta de Logu, a systematic civil, penal and rural law code in Sardinian. The layered authorship is important: the primitive core derives from a Rural Code issued by Mariano IV (traditionally 1337/1338 and later renewed), expanded into a fuller civil and penal code by Mariano IV (c. 1365–1376), revised under Hugh III, and finally promulgated by Eleanor of Arborea, conventionally dated c. 1392 — though sources acknowledge the exact date is unknown (proposals range 1385–1392, with some noting it came into force c. 1395). No original survives; the text is known from a late-14th/15th-century manuscript (Cagliari University Library) and a late-15th-century incunabulum. The Carta remained in force across Aragonese, Spanish and Savoyard Sardinia — extended to the whole island by Aragon in 1421 — until superseded by the Code of Charles Felix in April 1827, an extraordinary longevity for a medieval vernacular code.

Common questions

What was the Giudicato of Arborea?
The longest-lived judicate (Sardinian Judicadu de Arbaree), capital at Tharros then Oristano (from 1070). Under the Serra-Bas (Cervera) dynasty it became the champion of Sardinian independence against Aragon.
When is the Giudicato of Arborea shown on the map?
The border data draws the Giudicato of Arborea AD 866–1421. The source samples borders at fixed dates, so a span can begin late or run on past the end.
How large was the Giudicato of Arborea?
At its greatest extent drawn on this map, the Giudicato of Arborea covered about 26,000 km². That is the largest area the border data gives it across the years it is drawn, not necessarily its greatest extent in history.

Sources

This compendium cites its sources once for the whole document rather than per territory. Its bibliography names the English Wikipedia articles for each polity as the primary basis, cross-checked against Encyclopædia Britannica, the World History Encyclopedia and the scholarship of Donald Queller, Thomas Madden and Jonathan Harris on the Fourth Crusade, whose post-conspiracy reading of 1204 this document follows. The article this entry is anchored on:

This entry was last updated .

This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made

Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.

Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).

Around the same time

See the Giudicato of Arborea in its world

Open the atlas at 1144 and every neighbour, rival and successor is on screen with it — then drag the slider and watch what happens next.

Open the map at 1144 →