Writer's item for storing college files foremost in room (10)
I believe the answer is:
chesterton
'writer's' is the definition.
(writer GK Chesterton)
'item for storing college files foremost in room' is the wordplay.
I cannot really understand how this works, but
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is found within the answer.
'college' could be 'c' and 'c' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for chesterton that I've seen before include "Writer, creator of Father Brown" , "Writer born in London" , "G.K. --, English author" , "G K - -" , "Catholic author" .)