Thanks!
I do know that one of Franz Schubert’s most beloved songs “Ave Maria” was actually composed about a totally different “Lady”, the “Lady of the Lake”. Some Sheet Music carries the original title.
When one of Schubert's buddies told him that people were starting to think he had discovered piety, he got a good laugh. Some stories of how this song, with the piety angle, was composed are still wrong and out of date. One of the worst was even excerpted at FR.