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Have courts ever made a lodge reveal a member's name, and what happened?

Research question: Have any court cases or public disputes ever forced a Masonic lodge or Grand Lodge to reveal a member's name, and what happened?

The verified facts do not show a court or public dispute forcing a Masonic lodge or Grand Lodge to reveal a member's name. In 2024, the European Court of Human Rights found that Italy must compensate a lodge whose confidential documents were arbitrarily seized during a mafia investigation 1. The Court found that the parliamentary commission's search warrant did not name specific investigations, offences, persons or evidence 3. The lodge had argued that its members' data were sensitive because they relate to their beliefs 4. Separately, under Vichy, the Service des sociétés secrètes was set up to compile a file of Freemasons and lodges for German and French police 2, and its leaders were later tried, with Le Monde reporting on the proceedings in November 1946 6. Lord Millett also opposed a government register of Freemasons in the criminal justice system as an invasion of privacy 7. The newest relevant fact dates from 2025, roughly a year before October 2026 7.

Checked 2026-10-19. Only documented and supported facts are used.
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Sources

[1] supported
The European Court of Human Rights ruled that Italy must compensate a Masonic lodge whose confidential documents were arbitrarily seized during a mafia investigation.
"Estado debe indemnizar a logia masónica que sufrió incautación arbitraria de documentos confidenciales, (en el marco de una investigación contra la mafia)."
ITALIA. Tribunal Europeo de Derechos Humanos -Sentencia- Estado debe indemnizar a logia masónica que sufrió incautación de documentos que contienen datos confidenciales y sensibles de sus miembros, ya que guardan relación con sus creencias, (Convenio Europeo de Protección de Datos). (2024)
[2] supported
During the Vichy occupation, the Service des sociétés secrètes (SPSS) was set up in this building and was tasked with compiling a file of Freemasons and lodges for German and French police services.
"le SPSS est chargé de créer un fichier des francs-maçons et des loges à l'attention des services des polices allemande et française"
Hôtel du Grand Orient de France
[3] supported
The Court found that the parliamentary commission's search warrant did not name specific investigations, offences, persons or evidence, so the search and seizure were not sufficiently justified, despite the seriousness of the mafia infiltration being investigated.
"El Tribunal señaló que a pesar de la gravedad de la interferencia en los derechos de la asociación demandante y la gravedad del objeto de la investigación –la infiltración de logias masónicas por grupos mafiosos–, la comisión parlamentaria no mencionó en su mandato de registro investigaciones, delitos, personas o elementos de prueba específicos. Por lo tanto, el registro y la incautación no estaba"
ITALIA. Tribunal Europeo de Derechos Humanos -Sentencia- Estado debe indemnizar a logia masónica que sufrió incautación de documentos que contienen datos confidenciales y sensibles de sus miembros, ya que guardan relación con sus creencias, (Convenio Europeo de Protección de Datos). (2024)
[4] supported
The lodge argued that its members' data were special and sensitive because they relate to their beliefs, and therefore protected under Article 6 of the European data protection convention.
"Para la Logia afectada, los datos de sus miembros caen en la categoría datos especiales y sensibles, porque guardan relación con sus creencias, encontrándose protegidos por el artículo 6 del Convenio Europeo de Protección de Datos."
ITALIA. Tribunal Europeo de Derechos Humanos -Sentencia- Estado debe indemnizar a logia masónica que sufrió incautación de documentos que contienen datos confidenciales y sensibles de sus miembros, ya que guardan relación con sus creencias, (Convenio Europeo de Protección de Datos). (2024)
[5] supported
Vichy's law of 13 August 1940 banned secret societies, and all French civil servants had to swear they did not belong to them.
"qui interdit les sociétés secrètes , tous les fonctionnaires de l' État français doivent prêter un serment de non-appartenance à ces dernières"
Hôtel du Grand Orient de France
[6] supported
The leaders of the Service des sociétés secrètes were later put on trial, with Le Monde reporting on the proceedings in November 1946.
"Le procès des dirigeants du service des sociétés secrètes"
Hôtel du Grand Orient de France
[7] supported
Lord Millett spoke out against government attempts to create a register of Freemasons in the criminal justice system, describing it as an invasion of privacy.
"Lord Millett, 66, had spoken out before against the Government's attempts to set up a register of Freemasons in the criminal justice system. He has described it as an invasion of privacy [16]."
The judiciary and freemasonry (2025)