Sources will refer to this singer stating simply his surname 'Narbonne'. Émile Campardon does not report any first name in his work on the 'comédiens italiens' (Les Comédiens du roi de la troupe italienne pendant les deux derniers siècles: documents inédits recueillis aux Archives Nationales, Paris, Berger-Levrault, 1880, article: Narbonne, II, p. 29, accessible for free online at Internet Archive), whereas the name 'Pierre-Marie' is set forth in his later book on the Académie Royale de Musique, where Narbonne began his career (L'Académie Royale de Musique au XVIIIe siècle, Paris, Berger-Levrault, 1884, II, p. 193). The name 'Louis' is given instead by Georges de Froidcourt in his collection of Grétry's correspondence (La correspondance générale de Grétry, Bruxelles, Brepols, 1962, p. 145, footnote 8).
