### Clue: Composition written by snooker player starts "I'm a famous potter" (5)
### Answer: SPODE 
 ### Explanation: Definition: I'm a famous potter
 ODE(a poetic composition) **placed after**(written by) **the 1st letters, respectively, of**(… starts) "snooker player".
Answer: Josiah, English potter of the ceramic, and not of coloured balls, sort.