Poet who has text valued (10)
I believe the answer is:
wordsworth
'poet' is the definition.
(William Wordsworth, 1770-1850)
'text valued' is the wordplay.
'text' becomes 'words' (words is a kind of text).
'valued' becomes 'worth' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'words'+'worth'='WORDSWORTH'
'who has' is the link.
Can you help me to learn more?
(Other definitions for wordsworth that I've seen before include "Romantic poet" , "Poet (of the 20s)" , "writer" .)