armatia includes Poland, the Baltic and Russian lands, and the Cuman steppe. Although Sarmatia contained six conventa prior to the Mongol invasion, most were destroyed by the Mongols.

Triozera survived and maintained contact with Harco; Pripet Novyy was founded by a survivor from Bulgaris Nigrum in 1247 AD; Leczyca was re-inhabited and Millecavernae re-established contact at Tribunal Sarmatiae 1249 AD; Planetes and Insula Valaamis were established in 1260 AD.

In 1261 AD, Tribunal Grandis mandated that each Tribunal must be allowed to found a single conventum in Sarmatia; following this decision, numerous Conventa Tributa sprang up, bringing the total number as of Summer 1267 to twenty conventa.