Östergötland (Swedish pronunciation: [²œsːtɛrˌjøːtland]; English exonym: East Gothland) is one of the traditional provinces of Sweden (landskap in Swedish) in the south of Sweden. It borders Småland, Västergötland, Närke, Södermanland and the Baltic Sea. In older English literature, one might also encounter the Latinized version, Ostrogothia. The corresponding administrative county, Östergötland County, covers the entire province and parts of neighbouring provinces.

From 1560, Östergötland was represented with two separate coat-of-arms seals until 1884, when the current one was granted. The coat of arms is represented with a ducal coronet. Blazon: "Gules a Griffin with Dragon Wings, Tail and Tongue rampant Or armed, beaked, langued and membered Azure between four Roses Argent."

From west to east, in the middle parts, extends the Östgöta Plain (Östgötaslätten). It is largely agricultural. In the southern part of the province, the terrain becomes marked by the south Swedish highlands, with hills and countless lakes. The northern parts are also hilly, and are otherwise dominated by forests.

...
Wikipedia