Renaud de Montauban (the most common of many spellings) was a fictional hero and knight whose story first appeared in a twelth century Old French chanson de geste (song of heroic deeds), called Les Quatre Fils Aymon (The Four Sons of Aymon). The story of Renaud was a success throughout Europe and was adapted into Dutch, German, Italian and English versions throughout the Middle Ages. In an early part of the story, Duke Aymon took his four sons - Renaud, Richard, Alard and Guiscard - to Charlemagne, to be presented during a Pentecostal feast. Renaud quarrels with Bertolais, a nephew of Charlemagne, over a game of chess, and kills him. The four brothers flee, and their struggle with Charlemagne begins, ending only when Renaud agrees to join the Crusades. Much more about the story of Renauld's fight over a game of chess can be found here.
In the French late-fifteenth century four-volume History of Regnault de Montauban (1468-1470), the chess scene is depicted (in volume 2) as a fight between several people, one of whom has a sword. There are two chess boards, one of which is being used as a weapon. The chess pieces have been carefully painted as they tumble onto the floor. They are in two groups and are a very clear representation of a late-fifteenth century French chess set.