When the Diocese of Lucena was created on 20 August 1950, Marinduque became a part of her. In 2 April 1977, by virtue of the Apostolic Bull “Cum Tempore Maturare” issued by Pope Paul VI, Marinduque was created as an independent Diocese. It was called Diocese of Boac.
Boac is a poor Diocese in the island province of Marinduque.
