Antipope Gregory VI first to claim to be Pope as successor to Pope Sergius, and that Benedict VIII's claim was subsequent
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Pope Gregory VI, John Gratian, elected 1045; abdicated at the Council of Sutri in 1046; died 1048
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Gregory VI of Cilicia aka Gregory VI Apirat or Grigor VI Apirat, catholicos of the Armenian Church
Gregory Peck | Gregory of Tours | Order of St. Gregory the Great | Gregory Bateson | Pope Gregory VII | Gregory of Nyssa | Pope Gregory XIII | Pope Gregory XVI | Lady Gregory | Gregory S. Paul | Gregory Corso | Pope Gregory XV | Gregory of Nazianzus | Pope Gregory XI | Philippa Gregory | Gregory the Illuminator | Gregory Olsen | Gregory Blaxland | Dick Gregory | Pope Gregory I | Gregory Reinhart | Gregory Deyermenjian | Gregory Crewdson | Gregory Benford | Francis Thomas Gregory | Andre Gregory | Pope Gregory X | Pope Gregory VI | Jack Gregory | Gregory Thaumaturgus |
The claim of the third, Gregory VI, was peculiar in that he had purchased the title in good faith from Benedict IX two years previously.