Pope Gregory VI ( Latin : Gregorius VI ; died 1048 ) , born John Gratian in Rome ( Latin : Johannes Gratianus ) , was Pope from 1 May 1045 until his abdication at the Council of Sutri on 20 December 1046 .
Pope Gregory VI ( Latin : Gregorius Sextus ; died 1048 ) , born Johannes Gratianus , was an Italian priest of the Roman Catholic Church and the 149th Pope from 1 May 1045 until his abdication on 20 December 1046 .