Answer:

LEOVII

AnswerCrossword Clue
LEOVII10th century pope
LEOVIIPope after John XI
LEOVIIPope canonized in 936
LEOVII10th-century pope
LEOVIIOne of 13 at the Vatican
LEOVII10th-century pope interred at St. Peter's Basilica
LEOVIIJohn XI's successor
LEOVIIPope said to have died from a heart attack while in bed with his mistress