Louis Le Clerc (Loeiz ar C'hlerg) born on 30th May 1861, died on 27th December 1944, also known under the pseudonyme Kloareg ar Wern, was a priest, professor and Breton writer. Originally from Lanrodec, he became professor at Notre Dame de Guingamp, where he taught Breton from 1897. For his students he wrote a Breton grammar of the Tréguier dialecte and an exercise book for this grammar. He is known today for two books, 'Ma beaj Jeruzalem' (1903) and 'Ma beaj Londrez' (1910) which are accounts of his journeys written in that Breton dialecte.
In 1920, having developed a blindness (cecity), he was appointed to Lanvolon, and then in 1926 he retired to the 'Carmel' in St.Brieuc where he died in 1944.