Richerzeche was founded in the 12th Century in the Free Imperial City of Cologne as a secular brotherhood or a corporation of all the wealthy patricians, which gradually absorbed in their hands the direction of the city's government. They lost their power in the middle of the 14th century.
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- Groten, Manfred (1984). "Die Kölner Richerzeche im 12. Jahrhundert" (PDF). Rheinische Vierteljahrsblätter (in German). 48: 34–85. Retrieved 11 December 2024.