Religion played an important part in the lives of European Tasmanians in the colonial era. This is evidenced by the large number of isolated churches that survive from that period. Following the Castle Hill convict rebellion in 1804, Catholicism had been outlawed in the Australian colonies out of fear of further Irish Catholic uprisings. This had permitted Protestant religions, particularly Anglicanism to gain a strong foothold in Van Diemen's Land. The Colony's first Preacher, Robert Knopwood, had vigorously pushed the Church of England's cause for much of his time in the colony. Although always in a small minority, Judaism also existed in the colony since its foundation. The indigenous Tasmanians had attempted to maintain their traditional religion, but had been forcibly converted to Anglicanism.