The Barnabites having given up the mission, Pius VIII sent Monsignor Frederic Cao, a member of the Congregation of Pious Schools, and titular Bishop of Zama (18 June 1830). Gregory XVI placed the mission under the Congregation of the Oblates of the Virgin Mary (Congregatio Oblatorum Beatae Mariae Virginis, OMV) of Pinerolo, Italy, by appointing Monsignor Giovanni Ceretti (+ December 29, 1855), a member of this institute, and titular Bishop of Adrianople (Edirne), as first Vicar Apostolic. About this time, (the year 1845) Catholics of the two kingdoms numbered 2500. Monsignor Giovanni Balma (+ April 5, 1881) succeeded as Vicar Apostolic on 5 September 1848, but the war with the British rendered his labours ineffectual, and the mission was abandoned around 1852.