Answer: leoiv

AnswerCrossword Clue
LEOIV

Benedict III's predecessor

LEOIV

Pope before Benedict III

LEOIV

Mid-ninth century pope

LEOIV
Pope after Sergius II
LEOIV
Pope during the Battle of Ostia
LEOIVNinth-century pope
LEOIVPope who saved Rome from the Saracens.
LEOIVPope in 928
LEOIVSainted ninth-century pope
LEOIVNinth-century Vatican head
LEOIVVatican head: 847-855
LEOIVPope 847-855
LEOIVA Byzantine emperor