Saint Magnus, often known as the Apostle of the Allgäu, was a missionary saint in Southern Germany. He is revered as the founder of St. Mang's Abbey in Füssen and is thought to have lived either in the same period as Saint Gall (died in 627) or Saint Boniface (died in 754).

Magnus traveled to the Allgäu region of Bavaria at the invitation of a priest from Augsburg, accompanied by Bishop Wichbert of that diocese, to deliver a sermon to the region's pagan population. When he was left alone, Wichbert dispatched some young clerics to assist him; these individuals ultimately established the Bavarian community of Sankt-Mung at Füssen. Magnus started a mining industry on a nearby mountain and assisted the locals in clearing the soil for farming.

Around Magnus, several incredible tales—frequently involving animals—rose. He is believed to have exterminated a snake plague in Kempten. He was compelled to drive a dragon from the land he required for the monastery at Füssen; according to one version of the tale, he spared a young dragon who aided the local farmers by snatching rats, mice, and other vermin that damaged their crops.

After 26 years of missionary service, Magnus passed away, and St. Gall received his relics. The typical illustration of him shows him walking on snakes. He is also included as one of the fourteen Holy Helpers who are summoned to protect against tragedies like the Black Death as well as storms, insects, and dragons. His feast day is celebrated on 6th September.

Other Saints of the Day
Saint Arator
Saint Donatian
Saint Petronius
Saint Faustus
Saint Eleutherius