Intellectual Wren potentially owned Round House's east wing (7)
I believe the answer is:
egghead
'intellectual' is the definition.
(egghead is a kind of intellectual)
'wren potentially owned round house's east wing' is the wordplay.
'wren potentially' becomes 'egg' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'owned' becomes 'had' ('have' can be a synonym of 'own').
'round' indicates putting letters inside.
'east wing' suggests the final letters (the letter furthest to the right or 'east').
The final letter of 'house' is 'e'.
'had' going around 'e' is 'head'.
'egg'+'head'='EGGHEAD'
Can you help me to learn more?
(Other definitions for egghead that I've seen before include "where soldiers may take a dip?" , "Brainy type" , "scholar" , "Brainbox" , "Ovoid-shaped intellectual" .)