Poet's timeless homage to the queen (5)
I believe the answer is:
homer
'poet's' is the definition.
(Homer is an example)
'timeless homage to the queen' is the wordplay.
'timeless homage' becomes 'home' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to the queen' becomes 'r' (r is abbreviation regina. e.g. in ER ).
'home'+'r'='HOMER'
Can you help me to learn more?
(Other definitions for homer that I've seen before include "trained to get back to house" , "Bart Simpson's father" , "Old Greek epic poet" , "writer of old" , "Ancient Greek author" .)