Reign and Defense of Moldavia
Stephen was born around 1438, the son of Bogdan II of Moldavia. After his father was killed in 1451 he spent a period in exile before seizing the Moldavian throne in 1457, defeating his rival Peter Aaron. He would rule for nearly half a century, an exceptional span for a medieval Moldavian prince, during which he consolidated the principality and defended it against the surrounding powers of the Ottomans, Poland, and Hungary.
His reign is defined in the historical record by warfare on Moldavia's frontiers. The victory at Vaslui in 1475 over a much larger Ottoman force was among the most significant European checks to Ottoman advance in the period. His defeat at Valea Alba in 1476 did not result in the conquest of Moldavia, as the Ottoman army withdrew, and in 1497 he repelled a Polish invasion at the Cosmin Forest. In Orthodox memory this military record is understood not merely in political terms but as the defense of an Orthodox land against Muslim conquest.