Father Amiel Joseph Sobb was an important part of the pioneering team who assisted in the development of Mater Maria from its foundation until his death in 1982.
Sister Therese Marie Fleming was the founding Principal of the co-educational school at Mater Maria.
Father John Keenan was the first parish priest of Mona Vale and, as such, oversaw the construction of the new church that would serve the needs of the Mona Vale parish.
Sister Mary Pius was in charge and oversaw the building of the College at its present site in 1964.
Father John Joseph Therry was responsible for building the “Church at Barrenjoey” , the first Catholic church of the area on the shores of Careel Bay.