In the mid-19th century began the migration of Christians of the
Melkite Greek Catholic Church to Australia. The first colonies fixed in Sydney, Brisbane and Melbourne, and later settled in other regions. After the number of believers was significantly increased, the need arose to exercise faith and the Eucharist in the
Byzantine rite. In 1889, an Archimandrite of the
Basilian Chouerite Order of St. John the Baptist, Silwanos Mansour, was from Baalbek in Lebanon to Australia to visit his parents. At the request of the faithful, he remained, after he had obtained the administering approval of the Church in Sydney. Mansour began with the collection of donations, and in 1891 the cornerstone of the first church of the Melkite Greek Catholic community are placed. The foundation stone of the church was blessed by Bishop Higgins on behalf of the Roman Catholic Archbishop
Patrick Francis Moran of Sydney. The dedication of the church took place in 1895 and was a meeting place for the Christian faithful from various Eastern Churches. Since 1895 at the church is sided the name "Saint Michael Archangel" Cathedral.
Pope John Paul II implemented the eparchy with the
Apostolic constitution Quae quantaque on 26 March 1987. The territory of the diocese is covering also New Zealand since 22 September 1999 when Pope John Paul II, by decree of the Congregation for the Oriental Churches, extended the jurisdiction of Eparchy also to the faithful of the Melkites in New Zealand. ==Bishops==