Picture: K.Weise · CC BY-SA 4.0 · Wikimedia Commons
Magloire
Celtic bishop and saint
SaintWalesPre-congregation
Feast: 24 October (not on the universal Roman calendar; kept in the Roman Martyrology or local calendars)
Born
535
Died
575
Beatified
—
not needed: before formal processes
Canonised
By tradition
recognised before formal processes began
Who they were
Magloire, better known as Saint Magloire of Dol, is a Breton saint. Little reliable information is known of Magloire as the earliest written sources appeared three centuries after his death. These sources claim that he was a monk from Wales who became the Bishop of Dol-de-Bretagne in Brittany during the 6th century, and ended his life on the island of Sark, where he was abbot of a monastery.
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.