Short answers, pulled from the story.
Louis Carrogis Carmontelle (the 15th of August 1717 - the 26th of December 1806) was a French dramatist, painter, architect, and inventor. He is known for designing Parc Monceau in Paris, inventing the theatrical genre called the proverbe dramatique, drawing a famous portrait of the infant Mozart, and creating an early animated-landscape device considered an ancestor of the motion picture.
The proverbe dramatique was a short scene of light comedy that Carmontelle developed while working as a theatrical entertainer for Louis Philippe I, Duke of Orleans. It was designed not as a self-contained play but as a starting point for theatrical improvisation by the performers or audience.
Parc Monceau in Paris was designed by Louis Carrogis Carmontelle between 1773 and 1778 for the Duc de Chartres. Originally called the folie de Chartres, it departed from English naturalistic garden styles by presenting a sequence of architectural fabriques representing antiquity, exoticism, Chinese, Turkish, ruins, tombs, and rustic landscapes, all intended to unite in one garden all places and all times.
The most famous of Carmontelle's portraits is a drawing of the infant Mozart playing the clavier. Carmontelle typically worked in pen and watercolor and could complete a portrait in under two hours.
Beginning in 1783, Carmontelle painted landscape scenes on long bands of paper up to forty two meters in length and fifty centimeters high. These bands were mounted on wooden rollers inside a box, with daylight passing through the translucent paper from behind. As the rollers turned, the landscape appeared to move, giving viewers the illusion of walking through a garden. One such landscape is preserved at the Museum of Sceaux.
After the death of the Duc d'Orleans in 1785, Carmontelle entered the service of the Duc de Chartres and taught drawing to the duc's son, Louis-Philippe of France, who became the last King of France, and to his sister Adelaide.