Marie Carré does not appear to be a widely recognized established concept or figure in mainstream encyclopedic sources. She is primarily known within certain traditionalist Catholic circles as a French nurse and alleged mystic or visionary.
Carré is associated with a series of writings, often referred to as "The Book of Truth" (Le Livre de Vérité), which reportedly contain private revelations, warnings, and prophecies primarily concerning the Catholic Church and its future. These writings are considered private revelations and are not officially recognized, endorsed, or universally accepted as authoritative doctrine by the broader Catholic Church. Their content is often viewed with skepticism or caution by theological authorities. Due to her limited recognition outside specific religious communities, detailed and verifiable encyclopedic information is not widely available.