Duchy of Masovia

If you are looking for the page with the statistics about this polity you can find it here:All Statistics

The Duchy of Masovia was established as a feudal state in the course of the 12th century on the territory of today's Masovia after the division of the Kingdom of Poland in 1138.

Establishment

January 1139: The Duchy of Masovia was established as a feudal state in the course of the 12th century on the territory of today's Masovia after the inheritance of the Kingdom of Poland in 1138.

Chronology

Interactive Chronologies with maps are available in the section Changes Navigation

1. Mongol invasions and conquests

Were a series of military campaigny by the Mongols that created the largest contiguous Empire in history, the Mongol Empire, which controlled most of Eurasia.

1.1.Mongol Invasions of Germany

Were a series of Mongol raids in Germany.

1.1.1.First Mongol Invasion of Germany

Was a Mongol raid in the Holy Roman Empire.

May 1241: The Mongols invaded the Holy Roman Empire without major clash of arms.The army invaded eastern Germany, and crossed the March of Moravia in April-May 1241.

June 1241: The Mongols left eastern Germany and Moravia.

2. Polish-Teutonic Wars

Were a series of Wars between the Teutonic Order and the Kingdom of Poland. .

2.1.Polish-Teutonic War (1519-1521)

Was a war between the Kingdom of Poland and the Teutonic Knights.

2.1.1.Teutonic counterattack (1520)

Was the Teutonic counteroffensive of 1520 against the Polish invasion in the Polish-Teutonic War (1519-1521).

August 1520: In July 1520, the Teutonic Order, led by Grand Master Albert of Brandenburg, launched an offensive, seizing control of Masovia, Warmia, and Łomża territories. This military occupation marked a significant turning point in the Order's power in the region.

2.1.2.Polish offensive (1521)

Was a Polish military campaign against the Teutonic order. Polish forces retook Tczew, Starogard and Chojnice.

January 1521: The Teutonic Knights retreated towards Oliwa and Puck, pursued by Polish forces.

3. Further events (Unrelated to Any War)

January 1238: Lithuania, taking advantage of the conflict between the Teutonic and Livonian Orders, launched an attack on Ruthenia and successfully annexed the regions of Navahrudak and Hrodna.

January 1284: The territory of the Yotvingians (a Western Baltic people who were closely tied to the Old Prussians) conquered by the Teutonic Order.

January 1316: Expansion of Lithuania by 1315.

January 1352: The dukes of Mazovia became vassals of the united kingdom of Poland from 1351.

January 1382: The Duchy of Masovia is partitioned from Poland.