Authors such as Gerson, Père Alexandre, Jacques Échard, and Hurter say that William Perault was never Archbishop of Lyons, as the Gallia christiana asserts, Dupin is not justified in saying that he was never more than a religious of the Order of Preachers (cf. Antoine Touron, Hist. des hommes illust., 1, l.2, 184).
He assisted his father and Dupin in the unsuccessful defence of Marshal Ney before the chamber of peers; and he undertook alone the defence of General Cambronne and General Debelle, procuring the acquittal of the former and the pardon of the latter.
And, for instruction in the method of his historical studies, he may consult Hearne's Ductor Historicus, Wheare's Lectures, Rawlinson's Directions for the Study of History; and, for ecclesiastical history, Cave and Dupin, Baronius and Fleury.
Cahier Claude Esteban, Farrago/Léo Scheer, 2003, texts by Pierre Vilar, Yves Bonnefoy, Xavier Bruel, Florence Delay, Michel Deguy, Yves di Manno, Jacques Dupin, Jean Frémon, Emmanuel Hocquard, Gilbert Lascault, Bernard Noël, Jacqueline Risset, Jean-Luc Sarré, Jean-Pierre Cometti, etc.
Aurore Dupin, known as George Sand (1804–1876), granddaughter of the above, who spent most of her life at Nohant.
This mention of Dupin is in itself a reference to a reference made by Conan Doyle to the character in the first Holmes novel, A Study in Scarlet.