The Royal Astronomer of Ireland was a title attached to the Andrews Professorship of astronomy in Trinity College Dublin and the directorship of its astronomical observatory at Dunsink, near Dublin. The eight title-holders included Charles Jasper Joly, Professor Sir Robert Stawell Ball, Professor Sir William Rowan Hamilton, and Professor John Brinkley. The title of Royal Astronomer of Ireland was introduced by Letters Patent of George III in 1792 so John Brinkley was the first Royal Astronomer.