From The Art and Popular Culture Encyclopedia
Monsieur Lecoq is the creation of Émile Gaboriau, a 19th century French writer and journalist. Monsieur Lecoq is a fictional detective employed by the French Sûreté. The character is one of the pioneers of the genre and a major influence on Sherlock Holmes (who, in A Study in Scarlet, calls him "a miserable bungler"), laying the ground work for the methodical, scientifically minded detective. In French, "Monsieur" is "Mister" and his surname literally means "The Rooster".
In the person of armchair detective Tabaret, nicknamed Père Tireauclair, i.e,: Father Bringer of Light, a title Lecoq himself will eventually inherit, Gaboriau also created an older mentor for Lecoq who, like Mycroft Holmes and Nero Wolfe, helps the hero solve particularly challenging puzzles while remaining largely inactive physically. In Tabaret's case, aid is dispensed from the comfort of his bed.