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Daniel Patrick Mannix was an Irish-born Catholic bishop. Mannix was the Archbishop of Melbourne for 46 years and one of the most influential public figures in 20th-century Australia.
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Sir Norman Thomas Gilroy KBE was an Australian archbishop. He was the first Australian-born cardinal of the Roman Catholic Church.
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Patrick Francis Moran was the third Roman Catholic Archbishop of Sydney and the first cardinal appointed from Australia.
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Bartholomew Augustine Santamaria, usually known as B. A. Santamaria, was an Australian Roman Catholic anti-Communist political activist and journalist. He was a guiding influence in the founding of the Democratic Labor Party.