You will find references to him in French culinary history books.
Gateau is generally used for fancy, but light or rich, often with fresh decoration, such as fresh fruit or whipped cream.
Whereas a cake may remain fresh for several days after baking or even improve with keeping, a gateau usually includes fresh decoration or ingredients that do not keep well, such as fresh fruit or whipped cream.
Casse-museau is a hard dry pastry still made today'...petits choux and gateaux feuilletes are mentioned in a charter by Robert, Bishop of Amiens in 1311." ---Larousse Gastronomique, completely revised and updated [Clarkson Potter: New York] 2001 (p. The original dividing line between cake and bread was fairly thin: Roman times eggs and butter were often added to basic bread dough to give a consistency we would recognize as cakelike, and this was frequently sweetened with honey.
Terminologically, too, the earliest English cakes were virtually bread, their main distinguishing characteristics being their shape--round and flat--and the fact that they were hard on both sides from being turned over during baking..England the shape and contents of cakes were graudally converging toward our present understanding of the term.
They are variously called fouaces, fouaches, fouees or fouyasses, according to the district...
Among the many pastries which were in high favor from the 12th to the 15th centuries in Paris and other cities were: echaudes, of which two variants, the falgeols and the gobets, were especially prized by the people of Paris; and darioles, small tartlets covered with narrow strips of pastry...Most were probably rather sickly, made from cheap sponge filled with 'buttercream'..coated with fondant icing. French gateau are richer than the products of British bakers. These products naturally relaxed into rounded shapes.They involve thin layers of sponge, usually genoise, or meringue; some are based on choux pastry. The later are rarely dairy cream; instead creme patissiere (confectioner's custard--milk, sugar, egg yolks, and a little flour) or creme au buerre (a rich concoction of egg yolks creamed with sugar syrup and softened butter) are used. By the 17th century, cake hoops (fashioned from metal or wood) were placed on flat pans to effect the shape.Since the Second World War, however, usage of the term has honed in on an elaborate 'cream cake': the cake element, generally a fairly unremarkable sponge, is in most cases simply an excuse for lavish layers of cream, and baroque cream and fruit ornamentation...The word gateau is the modern French descendant of Old French guastel, 'fine bread'; which is probably of Germanic origin.When tortes are multilayerd and fancifully decorated they are closer to gateaux EXCEPT for the fact they can last quite nicely for several days.