Because of the characteristic round shape of its churchyard, the Brecon cathedral is thought to be on the site of an earlier Celtic church, of which no trace remains. A new church, dedicated to St. John, was built on the orders of Bernard de Neufmarché, the Norman knight who conquered the kingdom of Brycheiniog in 1093. He gave the church to one of his followers, Roger, a monk from Battle Abbey, who founded a priory on the site as a daughter house of Battle. The first prior at Brecon was Walter, another monk from Battle. Bernard de Neufmarché also endowed the priory with lands, rights and tithes from the surrounding area, and, after his death, it passed to the Earls of Hereford, so giving it greater prosperity. The church was rebuilt and extended in the Gothic style in about 1215, during the reign of King John. In the Middle Ages, the church was known as the church of Holy Rood or Holy Cross, because it owned a great 'golden rood' which was an object of pilgrimage and veneration until it was destroyed in the Dissolution of the Monasteries in the 16th century. The smoke-blackened roof of its hall was built between 1237 and 1267.
In 1538 the Prior was pensioned off, and the priory church became the parish church. Some of the surrounding buildings were adapted for secular use; and others, such as the cloisters, were left to decay and later demolished. By the 19th century, the church was in poor repair and only the nave was in use. Some restoration took place in 1836, but major renovation of the church did not start until the 1860s. The tower was strengthened in 1914.
In recent years, some of the buildings in the cathedral close have been converted into a diocesan centre, a heritage centre and exhibition, as well as a shop and 'Pilgrims'' restaurant.
References:The Basilica of Santa Maria in Trastevere is one of the oldest churches of Rome. The basic floor plan and wall structure of the church date back to the 340s, and much of the structure to 1140-43. The first sanctuary was built in 221 and 227 by Pope Callixtus I and later completed by Pope Julius I.
The inscription on the episcopal throne states that this is the first church in Rome dedicated to Mary, mother of Jesus, although some claim that privilege belongs to the Basilica di Santa Maria Maggiore. A Christian house-church was founded here about 220 by Pope Saint Callixtus I (217-222) on the site of the Taberna meritoria, a refuge for retired soldiers. The area was made available for Christian use by Emperor Alexander Severus when he settled a dispute between the Christians and tavern-keepers.
The church underwent two restorations in the fifth and eighth centuries and in 1140-43 it was re-erected on its old foundations under Pope Innocent II.