Context: Most residents belong to the Anglican Communion and are members of the Diocese of St Helena, which has its own bishop and includes Ascension Island. The 150th anniversary of the diocese was celebrated in June 2009.

Question: What communion do most residents of the island belong to?
Answer: Anglican

Question: When was the 150th anniversary of the diocese celebrated?
Answer: June 2009

Question: Not only are most residents of the island members of the Anglican communion, but what else?
Answer: the Diocese of St Helena

Question: The Diocese of Saint Helena has it's own what?
Answer: bishop