 The cemetery is of state significance for its association with the wider Catholic community of the Parramatta region from the 1820s which includes prominent individuals from the Parramatta region's Catholic community over almost 180 years.The three earliest surviving headstones date from 1824, while many of the other hundreds of monuments on site provide important and rich biographical details.As a colonial-era cemetery it is of state significance as the burial ground for many Catholic convicts and an unknown number of exiled Irish rebels.