Picture: Daranios · CC BY 3.0 · Wikimedia Commons
Arsatius
Italian Roman Catholic saint
SaintPre-congregation
Feast: 12 November (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
500
Died
401
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
Saint Arsatius or Arsacius is a saint of whose life virtually nothing is known. He is said to have been a bishop of Milan, who lived either around 400 or in the 6th century, and possibly a martyr, but there is no evidence. Because of the traditional connection with Milan, he is further supposed to have been a disciple of Saint Ambrose, who was also Bishop of Milan, but there is no evidence of this either.
Summary from Wikipedia (CC BY-SA 4.0), until this page is written up in full.
The miracles
Limited information available on this saint.
Why that counted as sanctity
Limited information available on this saint.