Superstition

Lucrative Fear-mongering ..  

Medieval Superstition - Kempley Church
https://www.youtube.com/watch?v=jkhEdUxbaD0
Monastic Life - Christina of Markyate was born with the name Theodora in Huntingdon, England, about 1096–98 and died about 1155. She was an anchoress and Prioress who came from a wealthy Anglo-Saxon family trying to accommodate with the Normans at that time. She became head of a community of nuns*
https://www.youtube.com/watch?v=p10_OraOcnk
https://en.wikipedia.org/wiki/Christina_of_Markyate

St Mary's Church, Kempley
This simple Norman church in Gloucestershire, remote from the village it once served, has the oldest timber roof of any building in England. Its greatest glory, however, comes from having some of the best preserved medieval wall paintings in Britain. Those in the chancel are particularly rare, dating from the early 12th century, and are the most complete set of Romanesque frescos in northern Europe.

The paintings are a vivid reminder of a time when church interiors were covered in such paintings. They tell stories from the Bible, depict the lives of saints, and show terrifying visions of demons and eternal damnation.
http://www.english-heritage.org.uk/visit/places/st-marys-church-kempley/