St. Nicholas Church (St. Nikolai Kirche) construction was started around 1230, making the building the second oldest church on the island. The size of the church was increased in 1470 and in 1508 the tower of the church was built.
There is a bronze font in the church which dates from 1391. It is not certain how it arrived at the church, but the casting carried an inscription which records that the font was given by Korp Benno the Bishop of Arosia. Another significant item of the 14th century is a polptych which has fourteen panels today but it is believed to have lost further panels. In addition there is another stone font that was rediscovered when nearby buildings were being built. It has since had a base added, and small restorations have also been made.
Amongst the church's artefacts on display is a large chest that was used for storing the parishioners contributions. After each service the collection bag would be emptied into the chest, but it would only be opened once a year. When it was opened then the funds would be distributed to those in need.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.