Dom Michel Le Nobletz (Breton: Mikel an Nobletz) (1577–1652) was a vigorous Counter-Reformation missionary active in the west of Brittany, who was responsible for a revival of popular . He developed new methods of teaching, and invented distinctive painted placards — known as taolennoù – which became widely used in the area. His extremely severe views and denunciations of alleged vice among local business leaders and even other priests led to accusations that he was a fanatic; he was nicknamed "the mad priest". He was forced to leave Douarnenez because of the animosity he engendered.