Greetings!
That is the very unique and interesting question actually.
It is about the last Emperor of the Western Roman Empire - Flavius Romulus Augustus, also known as Romulus Augustulus.
There is a steady tradition about his pious life and some mystical component of his biography.
Versions of his demise are:
1. The Lad-Emperor, in the glory, was ascended unto the Heaven in the physical body.
2. He founded the monastery and rested in his old age as a righteous abbout and spiritual teacher.
3. He died as a martyr, being poisoned by an agents of the Byzantine emperor.
Does someone know more on that subject?
Thank you much!