There seems to be a misunderstanding or lack of information regarding the artist you have inquired about, as Pierre Francois Ch. Le Roy does not have a well-documented historical presence that is commonly recognized within the field of art history. It is possible that you might be referring to a lesser-known or perhaps incorrectly spelled artist, or an individual who was not primarily known for their artistic contributions, such as a watchmaker or a figure from a different discipline.
However, if Pierre Francois Ch. Le Roy was indeed an artist, it is important to note that the lack of readily available information could be due to a variety of factors, such as the artist working in a particular niche, having a relatively short or local career, or their work not being widely publicized or recognized by mainstream art historical discourse.
To provide a more accurate biography, additional context or information about the artist's work, the time period in which they were active, or the region they were associated with would be necessary. Without this information, it is not possible to provide a detailed biography.
If you have more specifics or were perhaps referring to an artist by a similar name or a different individual entirely, please provide additional details so I can assist you more effectively. Alternatively, if Pierre Francois Ch. Le Roy is associated with a particular artwork, movement, or historical event, those details could also help in identifying the correct individual and providing a relevant biography.