Clue: One of a trio of writers in the family omitting pairs of leading characters (5)
Answer: EMILY
Explanation: Definition: One of a trio of writers

(th)**E** (fa)**MILY** [*omitting pairs of leading characters*]
 

 
*Emily Bronte was one of a trio of writers in the family, although it could be argued that their brother was also a writer (he wrote poetry and translations, although without the success of his sisters).