He afterwards settled at Embrun, where he built a chapel in which he passed his nights in prayer, after laboring all the day in the exercise of his sacred calling. By his pious example as well as by his earnest words, he converted many of the heathens among whom he lived.
He was afterwards made bishop of the people whom he had won over to Christ, but the date of his consecration is not positively known. Burning with zeal for the glory of God, he sent Vincent and Domninus to preach the faith in those parts which he could not visit in person.
He died at Embrun about the year 374, and was there interred. St. Gregory of Tours, who speaks of Marcellinus in terms of highest praise, mentions many miracles as happening at his tomb.
Feast Day of Saint Marcellinus
The Feast Day of Saint Marcellinus is April 20. The origin of Feast Days: most saints have specially designated feast days and are associated with a specific day of the year and these are referred to as the saint's feast day.
The feast days first arose from the very early Christian custom of the annual commemoration of martyrs on the dates of their deaths at the same time celebrating their birth into heaven.