The territory was established as the
Vicariate Apostolic of Sierra Leone, on 13 April 1858 by Pope
Pius IX, taking territory from the
Vicariate Apostolic of Two Guineas and Senegambia. It itself lost territory in 1897 to the
Prefecture Apostolic of Guinea Francese and in 1903 to the
Prefecture Apostolic of Liberia. The vicariate was elevated to the status of a diocese, taking the name of
Freetown and Bo on 18 April 1950. In 1952, the
Prefecture Apostolic of Makeni was split off from its territory. The diocese was elevated to an archdiocese on 11 November 1970, at which time also the
Diocese of Kenema was split off. ==Geography==