sentences:  In ca.1274, the historical Podlasie region was added to the Grand Duchy of Lithuania.In 1391 the Polish King and Lithuanian Grand Duke Jogaila attempted to transfer the region to Duke Vytautas' brother-in-law, Janusz I of Warsaw, Duke of Masovia, but from 1413 on Podlaskie was managed as part of the Grand Duchy's Trakai Voivodeship.