Duchy of Estonia (1219–1346)
The Duchy of Estonia, also known as Danish Estonia, was a direct dominion of the King of Denmark from 1219 until 1346 when it was sold to the Teutonic Order and became part of the Ordensstaat.
St. Olaf's Church is a visible reminder of the Danish era in Tallinn
The Dannebrog falling from the sky during the Battle of Lindanise
The Walls of Tallinn were started by Queen Margrethe
The Teutonic Order is a Catholic religious institution founded as a military society c. 1190 in Acre, Kingdom of Jerusalem. The Order of Brothers of the German House of Saint Mary in Jerusalem was formed to aid Christians on their pilgrimages to the Holy Land and to establish hospitals. Its members have commonly been known as the Teutonic Knights, having historically served as a crusading military order for supporting Catholic rule in the Holy Land and the Northern Crusades during the Middle Ages, as well as providing military protection for Catholics in Eastern Europe.
The Order's Marienburg Castle, Monastic state of the Teutonic Knights, now Malbork, Poland
Hermann von Salza, the fourth Grand Master of the Teutonic Knights (1209–1239)
Tannhäuser in the habit of the Teutonic Knights, from the Codex Manesse
Frederick II allows the order to invade Prussia, by P. Janssen