Terra Mariana [SEP] dissolved or abolished
between the lands ruled by the Church, the Order, the secular German nobility and the citizens of the Hanseatic towns of Riga and Reval. Following its defeat in the Battle of Grunwald in 1410 the Teutonic Order and the Ordensstaat fell into decline but the Livonian Order managed to maintain its independent existence. In 1561, during the Livonian war, Terra Mariana ceased to exist. Its northern parts were ceded to the Swedish Empire and formed into the Duchy of Estonia, its southern territories became part of the Grand Duchy of Lithuania
Terra Mariana
Terra Mariana (Medieval Latin for "Land of Mary") was the official name for Medieval Livonia or Old Livonia (, , ), which was formed in the aftermath of the Livonian Crusade in the territories comprising present day Estonia and Latvia. It was established on 2 February 1207, as a principality of the Holy Roman Empire but lost this status in 1215 when proclaimed by Pope Innocent III as directly subject to the Holy See.
Terra Mariana was divided into feudal principalities by Papal Legate William of Modena