Ernest Fandorin is not a real author. However, I believe you might be referring to "Ernest" as in "The Adventures of Erast Fandorin" series, which is a collection of historical detective novels written by Russian author Boris Akunin.
The series follows the adventures of Erast Fandorin, a Russian detective, in the 19th century. The books are known for their blend of mystery, history, and wit. skachat ernest fandorin knigi