Elizabeth it is in vain you say
'Love not' — thou sayest it in so sweet a way:
In vain those words from thee or L. E. L.
Zantippe's talents had enforced so well:
Ah! if that language from thy heart arise,
Breathe it less gently forth — and veil thine eyes.
Endymion, recollect, when Luna tried
You can tell Poe is struggling here. He’s spelling “Elizabeth” with the first letter of each line, so instead of going with the less-than-romantic “zebra,” he chose to use this ( very ) alternative spelling of  Xanthippe , the wife of Socrates. 

An Acrostic