They were NUMEROUS - - - - almost anything that needed to be done was done by Priests. There was even a Warrior-Pope who led armies into battle. You have one solid answer I will simply throw in a link and a few tid bits.
Wine is important to Christians. Wine is the blood of Christ used in the Sacrement thus many Priests tended wineyards and made wine thus Bennedictine Brandy and other Spirits.
Christ was a Carpenter many Preists were responsible for maintainence of their parrishes. Many Priests were Shepherds. Priest were the learned ones, they knew how to read and write thus they began as clerks to Kings and in time became Chancellors equaivallent to Prime Ministers.
"""""""""There were many different kinds of clergymen during the middle ages. Each one had his own duties and power. Some had vast amounts of power politically. Of course, they all shared one trait, they were the mediators of God. They were the bridge between God and the other people.
Bishops were the leaders of the church. The leader of the bishops, of course, was the pope. Bishops were often very wealthy. They dressed lavishly, wearing many of the same clothes as a feudal lord. Of course, they had their own religious garments to wear also. Bishops often had their own castles from which to conduct business. In this way, they were firmly entrenched in the feudal society. They were accepted in royal courts and dallied in politics. They also had many duties. They levied taxes and settled on issues such as annulments of marriages.
Parish and Castle Priest
These priests said Mass for the town in the town church and also said Mass in the castle. This was done in its chapel. They also were responsible for the collection of church taxes and the spreading of alms among the poor. Often these priests were the only people who could write and read in the village. Thus, they were sometimes responsible for village and castle record keeping.
Monks lived in monasteries in groups. They usually wore brown robes with hoods around their heads. They were also well educated and could usually read and write Latin. Many monks devoted themselves to learning. Some of the first encyclopedias and histories were written by monks and then copied over by hand. Monks were often the Monks were often the only source of Bibles in medieval times. Bibles were also copied by hand because the printing press was not yet developed. """
Here are links and snippets - - - -
You would find this site good for future history references but will just include a wee bit----
The Chaplain was responsible for the religious activities of a castle servants and Men at arms. The duties might also include that of a clerk and keeping accounts. A Priest would usually looked after the spiritual needs and confessions of the Nobles and their families
and this is Scholary