Lancelot Edward Threlkeld (1788-1859), missionary and Congregational minister arrived in Sydney in 1817. After serving as a missionary in the Society Islands he established a mission to Aboriginies on Lake Macquarie in 1825. The mission was eventually closed in 1841, whereupon Threlkeld moved to Sydney to become minister of the South Head Congregational Church. Throughout his like Threlkeld maintained his interest in Aboriginal welfare and was always a strong opponent of discrimination. In 1824 he married Sarah, daughter of Thomas Arndell, assistant surgeon on the First Fleet.