The surname "Fanny" appears nowhere in the very complete study of "La Chambre des comptes de Paris" ("Court of Finances of Paris") published by Count H. Coustant d'Yanville in 1875 (or for that matter in any other French document of the 17th century). In 1898, Viscount Oscar de Poli suggested that it must have been a transcription error and proposed reading it as "Lamy". An Antoine Lamy had actually been accepted as an auditor of finances on 2September 1602, a year before Pierre de Maupeou, Espérance Bellanger's cousin and son-in-law of Denis Feydeau who was a witness to the marriage of Savinien's parents in 1612. His wife, Catherine Vigor, associate of Vincent de Paul, would become President of the "Confrérie de la Charité de Gentilly" ("Charitable Fellowship of Gentilly") where the couple set up a mission in 1634. She could well be the godmother of Catherine de Cyrano.