After his death in Lausanne, he was venerated in that city as a saint, and his feast day was celebrated on 9 or 12 February.
[2] He is extolled as an ideal bishop; as a skilled goldsmith who made the sacred liturgical vessels with his own hands; as a protector and benefactor of the poor who ploughed his own land; as a man of prayer, and as a scholar.
In 587 he consecrated a proprietary church built at his expense on property of his own at Paterniacum (Payerne).
[1] It covers the years from 455 to 581, and is a valuable source for Burgundian and Franconian history, especially for the second half of the 6th century, "and serves to correct the bias of Gregory of Tours against the Arians of Burgundy"[4] Marius is the first to use the term variola (smallpox) to describe an epidemic that afflicted Gaul and Italy in 570.
[5] The chronicle has been frequently published: first by Pierre-François Chifflet in André Duchesne's Historiæ Francorum Scriptores, I (1636), 210–214; again by Migne in Patrologia Latina, LXXII, 793–802; in Monumenta Germaniae Historica, Auctores antiqui, XI (1893), 232–9 with an introduction by Theodor Mommsen;[1] and by Justin Favrod with a French translation, La chronique de Marius d'Avenches (455–581) (Lausanne 1991).