Which performer is associated with 'aa'?

What is associated with: aa milne was a regular contributor to this british humor magazine founded in 1841? Based on the clue 'aa milne wrote a book of verse called now we are t...', what is the answer? Based on the clue 'aa milnes play toad of toad hall was based on a bo...', what is the answer? Based on the clue 'aa milnes theatrical adaptation of the wind in the...', what is the answer? What is referred to by 'aaaa'? Based on the clue 'aaaaaaaaaaaay call him dr fonz a big thumbs up t...', what is the answer? Based on the clue 'aaaaaaaaay it was the family favorite featuring t...', what is the answer? Based on the clue 'aaaaaay he earned a masters degree from the yale ...', what is the answer?