text: Several members of this group were captured in a surprise attack by the rebel leader Nameisis, whose horses died crossing the icy river of Lielupe, and whose castle at Tervete was burned down by this group.
full_question: Several members of this group were captured in a surprise attack by the rebel leader Nameisis, whose horses died crossing the icy river of Lielupe, and whose castle at Tervete was burned down by this group. At that time, this group was based at Dobele Castle. One of its earliest leaders was Volquin, who based its operation at Cesis, but was defeated at the Battle of Saule, forcing this group to reorganize after a joint attack by the Zamgallians and the Samogitians. The lands conquered by this organization were known as Terra Mariana. Its final leader Gotthard Kettler was defeated at Ergeme and became the "Duke of Courland and Semigallia" after this group was dissolved in 1561, in the midst of a war which shares its name with this group. Originally known as the Brothers of the Sword, this group was pushed back at the Battle of Lake Peipus by the Novgorod Republic. For 10 points, name this order which worked with the Teutonic Knights to crusade against pagans in Lithuania.
first_sentence: Several members of this group were captured in a surprise attack by the rebel leader Nameisis, whose horses died crossing the icy river of Lielupe, and whose castle at Tervete was burned down by this group.
raw_answer: Livonian Order [or Livonian Order after "order" is read; Livonian Knights; or Order of the Brothers of the Sword until it is read; or Fratres Militiae Christi; or Schwertbruderorden; or Livonian Militia of Christ; or obvious equiva- lents]