Parramatta Marist Old Boys Union is the association of ex-students of Parramatta Marist, the oldest Catholic School in Austra ... lia. The School was established in 1820 in Parramatta. The Marist Brothers took over the School in 1875. The Old Boys Union itself was established in 1926. It provides fellowship for ex-students as well as contributing towards the support of the School and preserving its rich traditions,and history. read more