 A Le Roux is mentioned as the contributor of an in "Mercure galant" (March 1690), but whether this refers to Gaspard in unclear.The name is also found in Nicolas de Blégny's , although no address is included; in a tax document, ; two records of Gaspard Le Roux receiving annuities through the notaire publique "Alexandre Lebèvre" are dated 8 May 1702 and 5 August 1706 [this is the last known reference to Le Roux]; and the record of his being granted a dated 9 April 1705.