How Hermione had a child, a poet (5)

I believe the answer is:

byron

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'poet' is the definition.
(Lord Byron)

I don't understand how the rest of the clue works.

(Other definitions for byron that I've seen before include "Baron and poet" , "English poet, 1788-1824" , "Eng. romantic poet (Don Juan)" , "one who could produce lyrical lines" , "Lord George, poet" .)

I've seen this clue in The Everyman puzzle in The Observer.

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