Saint Louis Cemetery is the name of three Roman Catholic cemeteries in New Orleans, Louisiana. All of these graves are above ground vaults; most were constructed in the 18th century and 19th century. St. Louis Cemetery #1 is the oldest and most famous. It was opened in 1789, replacing the city's older St. Peter Cemetery (no longer in existence) as the main burial ground when the city was redesigned after a fire in 1788. Famous New Orleanians buried in St. Louis #1 include Etienne de Boré - wealthy pioneer of the sugar industry and the first mayor of New Orleans, Homer Plessy - the plaintiff from the landmark 1896 Plessy v. Ferguson Supreme Court decision on civil rights, and Ernest N. "Dutch" Morial - the first African-American Mayor of New Orleans. The renown Voodoo priestess Marie Laveau is believed to be interred in the Glapion family crypt.