Ranum, Portraits, pp. 160-162. Goibaut sent a copy of this work to the Grand Duke of Tuscany, along with, it would seem, a copy of Charpentier’s most recent oratorio for St. Cecilia (Caecilia Virgo et Martyr, H.415), who converts her husband and brother-in-law with gentle reasoning. The Grand Duke's resident in Paris identified Goibaut as the author of the libretto: http://ranumspanat.com/caecilia_conversions.htm
