 There is still a fountain in his name.On June 26, 1819, the supposed relics of Saint Efflam were discovered in the church of Saint-Efflam in Plestin.Abbot Tresvaux tells of having found them under a flat stone three feet deep, the tomb being opened in the presence of many people including several clergymen such as F. Nayrod, then parish priest of Plestin, and civil personalities such as François Moriou, then mayor of Plestin, and others.