Possible Clues:

• Wild animal beginning to eat children's author
• 'The Great Broxopp' playwright, 1921
• 'Mr. Pim Passes By' playwright
• He gave us Pooh
• Writer who populated the Hundred Acre Wood
• Author of the quote
• 'Now We Are Six' poet
• Writer who wrote 'A bear, however hard he tries, / Grows tubby without exercise'
• One bringing animal characters to life ultimately in novel form
• Big name in kiddie lit