State · 1444 – 1458

Duchy of Athens

A state of 1444 – 1458 — 14 years in Europe. It was replaced by Ottoman Empire. The atlas records 1 thing within it — people 1. Its line of rulers holds 3 people.

For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.

Stood: 14 years; 1444 – 1458
Rulers: 3; the duke of Athens
Most ground: 8,700 km²; in 1216
Within it: 1; recorded row
Symbol: 1; on record, with years

Map: Duchy of Athens in 1216, its borders in gold among its neighbours — Duchy of Athens in 1216, when it held the most ground the borders dataset draws for it: 8,700 km². Its neighbours wear their tints, as on the atlas's own map. Borders from Cliopatria (CC BY 4.0), coast and rivers from Natural Earth, cities from Reba, Reitsma & Seto 2016 (CC BY 4.0), each city under the name it bore that year.

Where it sits in time

Five thousand years, 3000 BCE to 2026; the state in gold, what it replaced or followed and what replaced or followed it in grey.

Before and after

The states the record files it as replacing or following, and those that replaced or followed it - Wikidata's own statements, each read from this state's side.

After it

Ottoman Empire · replaced by · 1302 – 1922

Rulers

The line of duke of Athens - the office this state names as its head of state.

died in officeleft alive by a regular roadending not on recorda second row: a reign that began before the last had ended — rival claimants, or a shared throne

Ruler	Reign	Length	How it ended · source	To the ruler before
Nerio II Acciaioli	1435 – 1439	4 years	left office aliveread off the dates alone
Antonio II Acciaioli	1439 – 1445	6 years	ending not on record	sibling
Nerio II Acciaioli	1441 – 1451	10 years	died in office, manner not recordedread off the dates alone	sibling
Francesco II Acciaioli	1455 – 1458	3 years	left office aliveread off the dates alone	nephew or niece

3 rulers, 3 with terms dated as terms, covering 1435 – 1458. Only 23 years of the line are dated - too short for a median. 1 of 3 handovers irregular - a killing, a deposition, a rival claimant, a rising or a coup beside it. The violent-handover count is withheld: power changed hands so often that any rising falls beside one (exposure 0.67, limit 0.6). A blank in the last column means no kin on record, which is coverage, never “unrelated”.

Flag or arms

Each symbol with the years its own statement gives; the timeline flies the one of the year on screen.

coat of arms, undatedBlason fam fr de La Roche (Ducs d'Athènes) · CC BY 3.0

What happened within it, by century

Every row the atlas hosts under this state, by the century it began in: wars and battles in red, risings, regime changes and massacres beside them, everything else in grey. A tall bar is a century the record is full for, which is partly a fact about Wikipedia.

1400 – 14991 row

Francesco II Acciaioli · ruler · 1430 – 1460

Among all states

Each measure against the states that carry it, never against all of them: a bar is the share of those states below this one.

How long it stood14 years
stood longer than 20% of 3,187 states with a recorded end or still standing.
The most ground it held8,700 km²
held more ground at its peak than 13% of 1,465 states with a border in Cliopatria.
Wars recorded per centurynone
had more wars on record per century than 44% of 3,187 states, counting the wars the atlas hosts under each.
Rulers on record3
has more rulers on record than 48% of 1,968 states with a line of rulers.

What led to it, and what came of it

The investigation's own picture: 0 causes the record names and 3 results, the strongest six of each at their own years, joined to the state by the kind of claim - a recorded statement solid, the article's sentence dashed, a theory dash-dot.

linked

Open the investigation: every row with its evidence, the conditions at the time, the theories condition by condition, and the succession analysed.

Open in the atlas

On the timeline, 1434 – 1468, with everything that stood beside it.
On the map in 1216, live: scrub the year and watch its borders move.
Investigate it: what led to it, what came of it, and its succession analysed.

Wikidata Q334714 (CC0) · borders Cliopatria, CC BY 4.0 · coast and rivers Natural Earth · symbols from Wikimedia Commons, each credited above · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.