Boudet's Celtic theory was utilized on at least one occasion. One of his colleagues, Abbé Raymond Ancé of Greffeil, Aude, who was also interested in archaeology and who was unhappy with the etymology of "Greffeil" derived from the Latin word, Agrifolium(meaning Holly), asked Boudet for his personal view on the matter. Boudet claimed that the etymology of "Greffeil" was derived from Grev-fill, meaning Full (plenty) and Grev (grave) translated as a place full of graves. Abbé Ancé then conducted an excavation in a part of his town and discovered some ancient graves possibly dating back to Neolithic times, as well as some artifacts (that were donated to the Museum of Carcassonne). Ancé's archeological discoveries were published in the French newspaper, Le Courrier de l'Aude and drew the attention of none other than Charles Dat de St-Foulc, the Honorary President of the Société d'Études Scientifiques de l'Aude. St-Foulc with the archaeologist Germain Sicard went to Greffeil to see Ancé's discoveries for themselves. A report about Abbé Ancé's archaeological discoveries by Charles Dat de St-Foulc entitled Une excursion à Greffeil dans les Corbières was published in 1891 in the Bulletin de la Société d'Études Scientifiques de l'Aude. It should be noted that in 1875 one of Greffeil's inhabitants, Mr Barthe, unearthed an old tomb dating back to either Celtic Gaul or Roman Gaul periods; whether Boudet was aware of this discovery and used it to pen the etymology of "Greffeil" is open to debate.
Une excursion à Greffeil dans les Corbières