The Roman Catholic Church was the important Church in England during the Middle Ages.
In the geographical area of present England, there was a Church referred to as the Celtic Church before the mission of St. Augustine of Canterbury. This Church was in conflict with the Roman Catholic Church about two very important issues. One was the date of Easter, and the other was the tonsure (haircut) of the monks. The Council of Whitby met to decide these vital issues, and ruled in favor of the practices of the Roman Catholic Church, which decided the whole things as far as Northumbria was concerned. The Celtic Church leaders gradually took on the practices of the Roman Catholics after that.
St Peter's basilica in Vatican City.
church?
the Preist is the most important.
The most important musicians during the Middle Ages were priests and those who worked for the church.
The church had the most power in the middle ages because it was the one thing that united people.
In the Early Middle Ages, and in the rest of the middle ages in the West, the Pope was most powerful. In the later middle ages in the East, it was the Patriarch of Constantinople.
The church had higher power
William Caxton
The Catholic church
Beowulf
The most important Church of the Middle Ages was the Catholic Church. When it split in 1054, it became the Roman Catholic Church in the West and the Eastern Orthodox Church in the East. There were always other Churches. The Celtic Church, the Coptic Orthodox Church and the Oriental Orthodox Churches were very early and all predated the Middle Ages. The Celtic Christian Church was absorbed by the Catholic Church, but the others continue. There were also heterodox organizations outside orthodox Christianity, and some of these were declared heretical, in some cases resulting in military operations.
I think probably Dante's Divine Comedy might be the most famous written work of the Middle Ages. Another possibility could be Chaucer's Canterbury Tales.
The House of Medici