linguistic:translation, information:filtering
Title and etymology

The word pope derives from the Greek πάππας (páppas), meaning 'father'. In the early centuries of Christianity, this title was applied, especially in the East, to all bishops and other senior clergy, and later became reserved in the West to the bishop of Rome during the reign of Pope Leo I (440–461), a reservation made official only in the 11th century. The earliest record of the use of the title of 'pope' was in regard to the by-then-deceased patriarch of Alexandria, Heraclas (232–248). The earliest recorded use of the title "pope" in English dates to the mid-10th century, when it was used in reference to the 7th century Roman Pope Vitalian in an Old English translation of Bede 's Historia ecclesiastica gentis Anglorum.