Title character misspelled in our list (7)

I believe the answer is:

troilus

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'title character' is the definition.
The definition suggests a singular noun which matches the answer.

'misspelled in our list' is the wordplay.
'our list' can be anagrammed to 'TROILUS'.
However, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for troilus that I've seen before include "Cressida's lover (Shak.)" , "Trojan lover of Cressida, according to some" , "Cressida's partner" , "Title role" , "Lover of Cressida (Shak.)" .)

I've seen this clue in The Guardian.

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