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Timeline: Michel-Louis Guérard des Lauriers

Key moments in the traditionalist Catholic world — councils and documents, communities and their founders, media launches and controversies — each with its sources.
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2002

  1. Donald Sanborn consecrated bishop by Robert McKenna

    In Detroit, Robert McKenna consecrated Donald Sanborn a bishop without a papal mandate. McKenna had been consecrated by Michel-Louis Guérard des Lauriers. Sanborn, rector of Most Holy Trinity Seminary, is known for advocating sedeprivationism.

    SourcesDonald Sanborn (Wikipedia)Michel-Louis Guérard des Lauriers (Wikipedia)

1979

  1. Guérard des Lauriers publishes the "Cassiciacum thesis" (sedeprivationism)

    The first issue of Cahiers de Cassiciacum set out the thesis of the French Dominican Michel-Louis Guérard des Lauriers: the post-conciliar popes hold the papacy only "materially," not "formally." Bishop Donald Sanborn is a present-day advocate of the thesis.

    SourcesSedeprivationism (Wikipedia)Michel-Louis Guérard des Lauriers (Wikipedia)Cassiciacum and the Problem It Does Not Solve (Nuntiatoria)