More info: The Sanctuary of St. Jadwiga in Trzebnica, also known as Trzebnica Abbey, was a convent for Cistercian nuns in Trzebnica, north of Wrocław, in Silesia.
Sources from medieval times state that Trzebnica was a trading place as early as 1138. The abbey was established by Duke Henryk Brodaty and his wife Saint Hedwig of Andechs. Legend has it that once Duke Henry when out hunting, fell into a swamp from which he could not extricate himself. In return for the rescue from this perilous position, he vowed to build the abbey. The abbey was later left to nuns from the Cistercian order.
The grave of St. Hedwig is located in a chapel to the right of the high altar, donated by her grandson Archbishop Ladislaus of Salzburg in 1267. The grave of Duke Henry I, her husband, is in front of the altar.