This site was registered as Roman Catholic land in November 1861 in the newly proclaimed Avon District town of Newcastle (now known as Toodyay).

[10] The St Aloysius Convent of Mercy school expanded with the construction of the double storey boy's boarding house in 1920.

In 1923 a modern presbytery was built for the parish priest across the road from the church on an adjoining block to the school buildings.

[12][13] In 1956 there was a call by Redmond Prendiville, the Catholic Archbishop of Perth, to build a more modern church, and over the next 5½ years fundraising was ongoing.

On the morning of 17 November 1963 a last Mass and Communion were celebrated in the old church by the Auxiliary Bishop of Perth, Miles McKeon.

A civic luncheon reception was given to the Bishop by the Toodyay Shire Council and in the afternoon the new church across the road was blessed and opened.

[14] On 3 December 1971 Lancelot Goody, Archbishop of Perth, wrote to the Sisters of Mercy in Toodyay advising of St Aloysius Convent School's imminent closure.

[16] On 16 November in that same year the Friars sponsored a reunion of past students of the St Aloysius School to celebrate the 100th anniversary of its opening in 1903.