This chapter investigates the ways in which Irish and Scots place identities were mediated through discursive religious practice. It also addresses the nature of the religious networks which linked the major Irish and Scots denominations throughout the Empire. The policy of fostering Irish clericalism within the Catholic Church in Australia constituted one discursive network linking Australia and Ireland with other parts of the Empire. Churches were among the most important of all focal points for communities. Churches and other buildings attracted meanings that continuously changed according to time and circumstance. The Irish Catholic Church's transformation under the leadership of Cardinal Cullen privileged explicit missionary enterprise. Religious sites of the sort described here constituted an important part of the ever changing mosaic of semiotic meaning inscribed as place in the Australian landscape by hegemonic and subaltern groups in the white migration stream.