During his rule, Clovis took over the area and Melaine became his trusted advisor.[3] He opposed immigration from Britain and attended the First Council of Orléans in 511. He died at Plaz in 530 and was buried in the Abbey Church of Notre-Dame en Saint-Mélaine in Rennes.
Melaine quickly became revered as a saint, especially after the wooden tower above his grave burnt down and his tomb miraculously survived. He has three feast days: 6 November (death), 6 January (burial) and 11 October (translation).
In Wales, his feast is celebrated locally on 10 October rather than 11 October at St Mellons, in modern-day Cardiff, though there is ambiguity over whether Melaine is the Saint 'Mellonius' said to have been born there.
In Cornwall, he is the patron of the villages of St Mellion and Mullion, where there is a tradition of his visit.
In the English translation of the 1956 edition of the Roman Martyrology, he is listed under 6 January with the citation: At Rennes, in France, St Melanius, Bishop and Confessor, who displayed innumerable virtues, and with his thoughts ever fixed on heaven, passed from the world in glory.
In the 2004 edition of the Roman Martyrology, Melaine is listed under 6 November, with the Latin name Melánii. He is mentioned as follows: 'At Rhedónibus (Rennes) in Brittany, bishop, who passed to God in the place called Plácium on the River Vicenóniam (Vilaine), where with his own hands he built a church and gathered a congregation of monks and servants of God'.
The abbey church of Notre-Dame-en-Saint-Melaine in Rennes was dedicated to him.
