Lord —, poet (5)
I believe the answer is:
byron
I believe this clue is a double definition.
'lord' is the first definition.
(I have seen 'Poetic lord ' mean 'byron' so perhaps 'lord' could also mean 'byron')
'poet' is the second definition.
(Lord Byron)
(Other definitions for byron that I've seen before include "one who could produce lyrical lines" , "Lord George, poet" , "Author of 'Don Juan'" , "Eng. romantic poet (Don Juan)" , "British Romantic poet" .)