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, Tallinn was a centre for the medieval Scandinavian community in Estonia.
The Dannebrog falling from the sky during the Battle of Lindanise
The Walls of Tallinn were started by Queen Margrethe
The Livonian crusade consisted of the various military Christianisation campaigns in medieval Livonia – modern Latvia and Estonia – during the Papal-sanctioned Northern Crusades in the 12th–13th centu
A Teutonic Knight on the left and a Swordbrother on the right.
The 1241 Treaty between Livonian Order, Bishopric of Ösel-Wiek and Oeselians at National Archives of Sweden