n. de l. Plogonnec.
(1) Plogoneg.
●(1580) G 1279. Ex libris Dnni Iohannis Manaut de Ploegonec.
●(18--) OLLI 900. Nonnik Plogonnek mestr en he neiz. ●(1865) FHB 8/63b. Eugen Damey, noter e Plogonnec. ●(1890) MOA 23b. Plogonek.
●(1905) ALMA 64. Plogonnek. ●(1915) HBPR 9. persoun-priol Plogonnec. ●(1935) SARO 26. etre Lokronan ha Plogonneg.
(2) [Toponymie locale]
●(18--) OLLI [].Kanet gant merc’het ar C’hroezou da Botr Ru Lean.