It was the crew of the French explorer La Pérouse who conducted the first Catholic ceremony on Australian soil in 1788 – the burial of Father Louis Receveur, a Franciscan friar, who died while the ships were at anchor at Botany Bay, while on a mission to explore the Pacific. The first Catholic priest colonists arrived in Australia as convicts in 1800 – James Harold, James Dixon and Peter O'Neill, who had been convicted for "complicity" in the Irish 1798 Rebellion. Mr Dixon was conditionally emancipated and permitted to celebrate Mass. On 15 May 1803, in vestments made from curtains and with a chalice made of tin he conducted the first Catholic Mass in New South 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 The Irish led Castle Hill Rebellion of 1804 alarmed the British authorities and Dixon's permission to celebrate Mass was revoked.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 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 Connolly. The foundation stone for the first St Mary's Cathedral, Sydney was laid on 29 October 1821 by Governor Lachlan Macquarie.