The Church of St Dyfnog, Llanrhaeadr-yng-Nghinmeirch, dates from the 13th century. The church is most famous for its Tree of Jesse window which dates from 1533.
The first mentions of the church occur in the Norwich Taxatio Ecclesiastica of 1254 and the Lincolnshire Taxatio of 1291. The South chamber and the door of the tower may both date from this time. The Jesse window, the church's most famous feature, dates from 1533. The window is reputed to have been removed and buried during the English Civil war to protect it from destruction. It was re-instated in 1661. The church suffered at the hands of Victorian restorers.
The church is constructed of limestone rubble with sandstone dressings and slate roofs. It has a double nave, a South chamber and a four-storey tower. The architectural historian Edward Hubbard notes the style as Perpendicular, with the possible exception of the tower door.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.