Buchez and P. C. Roux (Paris, 1838), and the Histoire de la Revolution par deux amis de la liberte (Paris, 1792-1803).
There remain, however, Le Roux de Lincy's researches, a series of articles on Sauval which appeared in the Bulletin du bibliophile et du bibliothecaire in 1862, 1866 and 1868.
As the result of research in the diplomatic correspondence at the Record Office in London 4 Mr Lang finds a clue in the affairs of the French Huguenot, Roux de Marsilly, the secret agent for a Protestant league against France between Sweden, Holland, England and the Protestant cantons of Switzerland, who in February 1669 left London, where he had been negotiating with Arlington (apparently with Charles II.'s knowledge), for Switzerland, his confidential valet Martin remaining behind.
His Brut or Geste des Bretons (Le Roux de Lincy, 1836-1838, 2 vols.), written in 1155, is merely a translation of Geoffrey of Monmouth.
The original manuscript first belonged to Montmerque, and then passed into the possession of Le Roux de Lincy, who prepared an annotated edition; unfortunately this material, together with the original MS., was lost in the incendiary fires which took place under the Commune (1871).