### Clue: Partly reveal a story regarding Shelley's youth (7)
### Answer: ALASTOR 
 ### Explanation: Definition: regarding Shelley's youth
 **Hidden in**(Partly) "reveal a story ".
Answer: Title of a Percy Shelley poem, the full title of which is "Alastor, or the Spirit of Solitude", and the poet was reputedly a loner in his youth.