When the case for Emmerich's beatification was submitted to the Vatican in 1892, a number of experts in Germany began to compare and analyze Brentano's original notes from his personal library with the books he had written.
The analysis revealed various apocryphal biblical sources, maps and travel guides among his papers, which could have been used to enhance Emmerich's narrations.

In his 1923 theological thesis, German priest Winfried Hümpfner, who had compared Brentano's original notes to the published books, wrote that Brentano had fabricated much of the material he had attributed to Emmerich.

By 1928, the experts had come to the conclusion that only a small portion of Brentano's books could be safely attributed to Emmerich.

At the time of the Emmerich's beatification in 2004, the Vatican position on the authenticity of the Brentano books was elucidated by priest Peter Gumpel, who was involved in the study of the issues for the Congregation for the Causes of the Saints: "It is absolutely not certain that she ever wrote this.
There is a serious problem of authenticity".
According to Gumpel, the writings attributed to Emmerich were "absolutely discarded" by the Vatican as part of her beatification process.
When the case for Emmerich's beatification was submitted to the Vatican in 1892, a number of experts in Germany began to compare and analyze Brentano's original notes from his personal library with the books he had written. The analysis revealed various apocryphal biblical sources, maps and travel guides among his papers, which could have been used to enhance Emmerich's narrations.
In his 1923 theological thesis, German priest Winfried Hümpfner, who had compared Brentano's original notes to the published books, wrote that Brentano had fabricated much of the material he had attributed to Emmerich.
By 1928, the experts had come to the conclusion that only a small portion of Brentano's books could be safely attributed to Emmerich.
At the time of the Emmerich's beatification in 2004, the Vatican position on the authenticity of the Brentano books was elucidated by priest Peter Gumpel, who was involved in the study of the issues for the Congregation for the Causes of the Saints: "It is absolutely not certain that she ever wrote this. There is a serious problem of authenticity". According to Gumpel, the writings attributed to Emmerich were "absolutely discarded" by the Vatican as part of her beatification process.
Anne Catherine Emmerich