Possible Clues:

• Family conceals age of beastly king
• It's like Aslan to harm one in row
• Describing one with pride?
• A beastly follower of Leo the Eighth?
• Might be the French 09 sort of a lion
• Internal rhyme in which poet may take pride?
• One over the eight following the sign of the beast
• Pope's policy holding a very long time
• One line could suggest a sort of Latin verse
• Like some big game one bungled in series