(Agnes of Prague) Abbess. Born Prague, c.1200;died there, 1281. Daughter of Ottocar, King of Bohemia, she was betrothed to Frederick II, Emperor of Germany, but availed herself of her canonical rights to enter the cloister. She became a Poor Clare in the monastery of Saint Saviour, Prague, which she had erected, and of which she became abbess. Feast, March 2,.