Wales. The Irish led Castle Hill Rebellion of 1804 alarmed the British authorities and Dixon's permission to celebrate Mass was revoked. Fr Jeremiah Flynn, an Irish Cistercian, was appointed as Prefect Apostolic of New Holland (Australia) and set out from Britain for the colony uninvited. Watched by authorities, Flynn secretly performed priestly duties before being arrested and deported to London. Reaction to the affair in Britain led to two further priests being allowed to travel to the colony in 1820 – John Joseph Therry and Philip Conolly. The foundation stone for the first St Mary's Cathedral, Sydney was laid on 29 October 1821 by Governor Lachlan Macquarie. The absence of a Catholic mission in Australia before 1818 reflected the legal disabilities of Catholics in Britain. The government therefore endorsed the English Benedictines to lead the early church in the colony. William Bernard Ullathorne (1806–1889) was instrumental in influencing Pope Gregory XVI to establish a Catholic hierarchy in Australia. Ullathorne was in Australia from 1833 to 1836 as vicar-general to Bishop William Morris (1794–1872), whose jurisdiction extended over the Australian missions. Foundations of diversification and equality The Church of England lost its legal privileges in the Colony of New South Wales by the Church Act of 1836. Drafted by the Catholic attorney-general John Plunkett, the act established legal equality for Episcopalians, Catholics and Presbyterians and was later extended to Methodists. Nevertheless, social attitudes were slow to change. Laywoman Caroline Chisholm (1808–1877) faced discouragements and anti-papal feeling when she sought to establish a migrant women's shelter and worked for women's welfare in the colonies in the 1840s, though her humanitarian efforts later won her fame in England and great influence in achieving support for families in the colony. John Bede Polding, a Benedictine monk, was Sydney's first Catholic bishop (and then archbishop) from 1835 to 1877. Polding requested a community of nuns be sent to the colony and five Irish Sisters of Charity arrived in 1838. The sisters set about pastoral care in a women's prison and began visiting hospitals and schools and establishing employment for convict women. The sisters went on to establish hospitals in four of the eastern states, beginning with St Vincent's Hospital, Sydney in 1857 as a free hospital for all people, but especially for the poor. At Polding's request, the Christian Brothers arrived in Sydney in 1843 to assist in schools. In 1857, Polding founded an Australian