bishop. He is known and culted in England because of his association with Germanus of Auxerre, who preached effectively against the Pelagians on his two visits to Britain. Lupus was born in the late 4th century at Toul, married a sister of Hilary, but after six years they separated by mutual consent. Lupus sold his estates, became a monk at Lérins, and bishop of Troyes c.426. In 429 he came to Britain with Germanus. Later, when Attila the Hun was ravaging Gaul, Lupus went out to meet him and persuaded him to spare the province, but at the cost of himself becoming his hostage. When Attila was defeated, Lupus was accused of helping him to escape and had to retire to the mountains as a hermit. But after some years he resumed the rule of his diocese until his death.
Most of these details come from an unreliable Life, believed to have been written to further the interests of the see of Troyes during the 8th century. Feast: 29 July.
AA.SS. Iul. VII (1731), 51–82; B. Krusch, ‘Vita S. Lupi’ in M.G.H., Scriptores rerum merov., vii. 284–302; B.L.S., vii. 238–9.