Brian J. Costello

Brian J. Costello is a lifelong resident of New Roads, Louisiana, USA and an 11th generation Louisianan. He is a graduate of Louisiana State University, Baton Rouge. An authority on Louisiana and European history, culture, religion and linguistics, he is, as of 2026, the sole author of 21 books and co-author of nine books, as well as numerous feature articles.

He is one of the last native and most sought-after speakers of the Pointe Coupee Creole dialect. He is founding and current Historian and Genealogist of the Pointe Coupee Parish Library, former editor of the Pointe Coupee Banner, and has participated in several nationally and internationally broadcast documentaries in his areas of work.

Brian Costello is a lay tertiary of the Order of the Blessed Virgin Mary of Mercy (Mercedarians) and has been knighted by the Equestrian Order of the Holy Sepulchre of Jerusalem, the Royal Brotherhood of the Order of Saint Michael of the Wing, and the Association and Order of the Nobility of the Holy Roman Empire. He is an active member of of several spiritual and humanitarian apostolates based in the United States, France, Austria and Italy, and active in New Roads and New Orleans Carnival coordination.

Costello has been recognized by the Creole Heritage Center of Northwestern State University, Natchitoches, Louisiana; by the United States Army Corps of Engineers / Mississippi River Commission; the Daughters of the American Revolution; Woodmen of the World; and New Orleans Civil War Study Group, among other institutions. He reigned as King of the 2009 New Roads Lions Carnival; and was the recipient of the 2014 Pointe Coupee Humanity Award.

NEW by Brian J. Costello, in collaboration with Tonya Scott Wyandon and E. Barrett Ristroph: Through the Waters of Tribulation: Pointe Coupee Parish, Louisiana During Reconstruction and Jim Crow (Ristroph Law, Planning and Research, 2026).