State · 1806 – 1918
Grand Duchy of Hesse
A state of 1806 – 1918 — 112 years in Europe. It replaced German Confederation and Landgraviate of Hesse-Darmstadt. It was replaced by People's State of Hesse. The atlas records 3 things within it — people 3. Its line of rulers holds 3 people. Its own article says it was conquered.
For the full story, the article on Wikipedia (CC BY-SA 4.0); this page holds what the record says of the state.
- Stood
- 112 years
- 1806 – 1918
- Rulers
- 3
- the Landgrave of Hesse-Kassel
- Most ground
- 20,000 km²
- in 1806
- Within it
- 3
- recorded rows
- Symbols
- 2
- on record, with years
1806 · at its largest · 20,000 km²
1870 · last mapped · 7,800 km²
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.
Before it
- German Confederation · replaces · 1815 – 1866
- Landgraviate of Hesse-Darmstadt · replaces · 1567 – 1806
After it
- People's State of Hesse · replaced by
How it ended, as its article says
Conquered, 1918. Read from the article's section “lead” by its grammar; the claim is only that the article says so.
During the November Revolution after World War I in 1918, the grand duchy was overthrown and replaced by the People's State of Hesse.
One sentence of the English Wikipedia article, CC BY-SA 4.0.
Rulers
Read from the state’s own English article and its rulers’ articles, where Wikidata names no ruler.
| Ruler | Reign | Length | How it ended · source | To the ruler before |
|---|---|---|---|---|
| Louis I, Grand Duke of Hesse | 1806 – 1830 | 24 years | ending not on record | |
| Frederick William, Elector of Hesse | 1847 – 1866 | 19 years | ending not on record | |
| Ernest Louis, Grand Duke of Hesse and by Rhine | 1892 – 1918 | 26 years | ending not on record |
3 rulers, 3 with terms dated as terms, covering 1806 – 1918. Median reign 24 years. 0 of 2 handovers irregular - a killing, a deposition, a rival claimant, a rising or a coup beside it. A blank in the last column means no kin on record, which is coverage, never “unrelated”.
Ground held, by year
km² inside its borders as the borders dataset draws them, measured on an equal-area grid; a step series, held between the years the dataset maps.
20,000 km² in 1806, 10,600 km² in 1856; at its largest 20,000 km² in 1806. Cliopatria, CC BY 4.0.
Flags and arms, in order
Each symbol with the years its own statement gives; the timeline flies the one of the year on screen.

coat of arms, undatedCoat of Arms of the Grand Duchy of Hesse 1806-1918 · CC BY-SA 4.0 · Glasshouse using elements by Sodacan, Heralder and Trondivers 
flag, 1806 – 1918Flagge Großherzogtum Hessen mit Wappen · Public domain
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.
1800 – 18993 rows
- Prince Alexander of Hesse and by Rhine · commander · 1823 – 1888
- Friedrich Sixt von Armin · commander · 1851 – 1936
- Fritz von Loßberg · commander · 1868 – 1942
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 stood112 years
stood longer than 49% of 3,187 states with a recorded end or still standing.
- The most ground it held20,000 km²
held more ground at its peak than 21% 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.
- How long a reign lasted, at the median24 years
had longer reigns, at the median, than 72% of 967 states whose dated line can carry a median.
- 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: 4 causes the record names and 1 result, 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.
Open the investigation: every row with its evidence, the conditions at the time, the theories condition by condition, and the succession analysed.
Theories that apply to its ending
Of 3 theories of why states fall, 1 has every condition present at this ending; each is applied by its own logic, condition by condition, and whether its authors named this case is a footnote.
Dynastic cycle and the decay of group feeling
Ibn Khaldun 1377 · Turchin & Nefedov 2009
Applies by its own logic: the condition it names held here, and this is the kind of outcome it predicts — adverse regime change or the state's ending.
- the state 90 to 160 years old — ageBand 112
Open in the atlas
- On the timeline, 1795 – 1929, with everything that stood beside it.
- On the map in 1806, live: scrub the year and watch its borders move.
- Investigate it: what led to it, what came of it, and its succession analysed.
Wikidata Q20135 (CC0) · borders Cliopatria, CC BY 4.0 · coast and rivers Natural Earth · symbols from Wikimedia Commons, each credited above · one sentence of the English Wikipedia article, CC BY-SA 4.0 · data built 2026-10-06 · Pastlas v2.9.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.