Complex sentence: Daniel Mannix (4 March 18646 November 1963), Irish-born Australian Catholic clergyman, and the Archbishop of Melbourne for 46 years, was one of the most influential public figures in 20th century Australia.
Split into simpler sentences: Daniel Mannix (4 March 18646 November 1963) was an Irish-born Australian Catholic bishop. Mannix was the Archbishop of Melbourne for 46 years and one of the most influential public figures in 20th century Australia.