In 1273 the Order built Dinaburga Castle on lands nominally controlled by Traidenis. The castle was of great strategic importance: it was used as a base for raids into central Lithuania in hopes that weakened Traidenis would discontinue his support of Semigalians who rebelled against the Order. Traidenis besieged the castle for a month, but failed to capture it. Historiography often claims that the Order started the campaign into Lithuania in retaliation for the siege. However, newer research by Edvardas Gudavičius and Artūras Dudonis deny direct cause and effect relationship between the siege and the campaign as the siege is dated 1274. They claim that the campaign was a result of a broken peace treaty between Lithuania and Livonia. The peace was concluded so that Traidenis could concentr