Poetry Exercise: Ottava Rima

Here's the next self-referential open form poem. One of the poetry exercises set by Stephen Fry.

The ottava rima as its name suggests
Was borrowed from Italian epic form
Too use in jest as with Lord Byron's epics
Best: Don Juan - the romantic satire long.
Later though, its mocking roots it left
And so his "Among School Children" was born
WB Yeats' philosophical anguish at ending years
End in perfect square of words that sear.

The rhyme scheme is abababcc. For those of you who saw the earlier draft, please erase the thought. I made horrendous mistakes in that rhyme scheme. As you can see I'm getting a bit too careless!