 The diocese of Malacca was transferred to the Vicariate Apostolic of Ava and Pegu in 1838 and then the Vicariate Apostolic of Siam in 1840.In 1841, the Church was placed under the jurisdiction of the Vicariate Apostolic of Western Siam that was erected from the Vicariate Apostolic of Siam.Initially called the Vicariate Apostolic of Western Siam, the name was changed to the Vicariate Apostolic of the Malay Peninsula and finally the Vicariate Apostolic of Malacca-Singapore.