More Slidell Parades ... Follow link for parade details. Krewe of Perseus Parade Parade City: Slidell (St. Tammany Parish) Map It Parade Date: January 20, 2008 Description: Parade begins at 1:00 pm. The Krewe of Perseus was chartered by the State of Louisiana on April 27, 1970, thus making it the oldest Carnival organization in Slidell. We are incorporated as �Beau Geste, Inc.� or in English, �Graceful Gesture�. The purpose of the Krewe was ( and is) to bring a true Mardi Gras Ball and Parade to the City of Slidell. We are strictly a social organization and operate with funds which are generated solely by our members through dues and the profit from Ball tickets. The minimum age of a member is 21 years old.