Hoo

At the beginning of "When We Were Very Young" is a preface written by AA Milne to the reader. The Hoo character has provided alot of interest for me....
Milne writes


"Then there is another thing. You may wonder
sometimes who is supposed to be saying the verses. Is
it the Author, that strange but uninteresting person, or
is it Christopher Robin, or some other boy or girl, or
Nurse, or Hoo? If I had followed Mr Wordsworth’s
plan, I could have explained this each time; as it is, you
will have to decide for yourselves. If you are not quite
sure, then it is probably Hoo. I don’t know if you have
ever met Hoo, but he is one of those curious children
who look four on Monday, and eight on Tuesday, and
are really twenty-eight on Saturday; and you never
know whether it is the day when he can pronounce his
‘r’s’.  He had a great deal to do with these verses..."