Daniel who wrote of French adversary (5)
I believe the answer is:
defoe
'daniel who wrote' is the definition.
The definition suggests a singular noun which matches the answer.
'of french adversary' is the wordplay.
'of french' becomes 'de' ('of' in French).
'adversary' becomes 'foe' (I've seen this in another clue).
'de'+'foe'='DEFOE'
Can you help me to learn more?
(Other definitions for defoe that I've seen before include "18th-century author" , "pamphleteer and novelist" , "Daniel -, Moll Flanders author" , "Author of Robinson Crusoe, d. 1731" , "Writer of Moll Flanders" .)