The name Montardier does not correspond to a widely recognized artist whose biography is readily available in the historical record or well-known art historical resources. It is possible that Montardier may refer to a lesser-known, possibly local or emerging artist, or it could be a misspelling of an artist's name. Without more specific information, such as a first name or a context in which the artist worked, it is challenging to provide a detailed biography.
Artists can sometimes be obscured by time or lack of documentation, especially if they did not achieve fame or were not part of a significant art movement. It is also possible that Montardier may have been an artisan or creator whose work did not receive the kind of attention that would lead to historical records being kept.
If Montardier is a contemporary artist, their biography might be available through more recent resources such as contemporary art databases, exhibition catalogs, or the artist's own publications and website. Art historians typically rely on a range of sources to piece together an artist's life and work, including but not limited to interviews, critical reviews, archival materials, and museum records.
In any case, without additional information, a comprehensive biography cannot be provided for an artist named Montardier. If you have more details or context regarding this artist, such as their full name, the period or region in which they worked, or specific works of art, please provide them, and I will do my best to assist you further.