Cölestin III., Papst2024-01-022024-01-021194-07-0212.01.19821194-07-026900https://urkundenrepositorium.uni-marburg.de/handle/lba/10731Perg. fleckig; Archivsignatur: Nr.4imageCC-By 4.0 Internationalhttps://creativecommons.org/licenses/by/4.0/Papst Coelestin III. an Heinsberg, Kloster - 2.7.119413.03.1986