Emile Gridel does not appear in the standard references of art history that I have access to, which might indicate that he is either a lesser-known artist, a contemporary artist whose recognition is still emerging, or possibly an artist known primarily in specific circles or regions. Without specific dates of birth and death, it's challenging to provide a detailed biography. The absence of widely recognized information could suggest that Emile Gridel's contributions to the art world might not have been extensively documented in mainstream art historical resources, or he may be an artist whose works and life story are yet to be discovered and appreciated by a broader audience. Art history is a vast and ever-evolving field, with new discoveries and re-evaluations of artists' contributions occurring regularly. It is possible that more information on Emile Gridel could emerge with future research and interest in his work.