Manuel II Palaiologos was a Byzantine emperor who ruled from 1391 until 1425. Born in Constantinople, he navigated a period of intense pressure as a vassal of the Ottoman Empire. To protect his realm from Ottoman expansion, he traveled extensively through Western Europe, visiting various royal courts to request military assistance. A scholar and writer, he was also a monk, having been tonsured under the name Matthaios shortly before his death. He is remembered as a ruler who sought to preserve his empire through diplomacy and international alliances.