Ten love being held by wholly chivalrous character (7)
I believe the answer is:
quixote
'chivalrous character' is the definition.
The definition suggests a singular noun which matches the answer.
'ten love being held by wholly' is the wordplay.
'ten' becomes 'X' (Roman numeral).
'love' becomes 'o' (love means zero in tennis).
'being held by' means one lot of letters goes inside another.
'wholly' becomes 'quite' (I've seen this in another clue).
'x'+'o'='xo'
'xo' placed within 'quite' is 'QUIXOTE'.
Can you help me to learn more?
(Other definitions for quixote that I've seen before include "12's Don" , "1 across --, knight-errant" , "Cervantes's Don" , "Foolish gentleman" , "Cervantes' hero" .)