Article snapshot taken from[REDACTED] with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
Santo Stefano in Manciano is a medieval abbey, long abandoned, at Manciano (frazione of Trevi) in Umbria, Italy. Now only the ruined church, dating at the latest to the first half of the 13th century, remains.