The abbey was founded in 1234 by Queen Kunigunde of Bohemia, a daughter of Philipp IV of Schwabia and wife of King Wenzel. The convent was founded to provide prayers and memorials for eternity for the salvation of Queen Kunigunde and her parents (Wienand, 337).
The convent enclosure was entirely destroyed in 1427. Further fires plagued the community in 1515, 1542, and 1683.
No medieval buildings remain; however, the convent was rebuilt in the Baroque style which stands today.
Wienand mentions that the convent has withstood not only political and religious upheavals but also flood and fire. However, he does not indicate when the flood or fire occurred. The convent continues today for the care of feeble-minded women (Wienand, 337).
more research necessary
Removed "? (needs verification)" from Dedication field because of [Public letter]: "...we have founded and endowed the cloister of St. Marienthal in honor of that virgin and mother of god and..."
The convent maintains a website at http://www.schlesien.de/Orte/Ostritz/ostritz-kloster.htm