Carlos Caso-Rosendi is an Argentine-American writer. A convert, he was received in the Catholic Church in 2001. He is the founder of the Spanish website Primera Luz and his own blog in English, Carlos Caso-Rosendi. His books include Guadalupe: A River of Light, Ark of Grace – Our Blessed Mother in Holy Scripture, and A Vademecum of Catholic Apologetics. He lives in Buenos Aires.