On 12 March 1868, the Prince attended the Sailor's Picnic at
Clontarf, Sydney. O'Farrell came up behind the Prince and fired a revolver into his back. The assassin was immediately tackled by William Vial, a local coach-maker and O'Farrell was severely beaten and nearly lynched by the mob before police arrested him. The wound was serious, but not fatal.
Henry James O'Farrell, author of the assassination attempt on Alfred, Duke of Edinburgh, ca. 1868, photograph from carte de visite by Montagu Scott, State Library of New South Wales, P1/1259 archival.sl.nsw.gov.au/Details/archive/110341432
Owner: State Library of NSW
Source: Flickr Commons
I think O'Farrell might be double r's... adb.anu.edu.au/biography/ofarrell-henry-james-4322 en.wikipedia.org/wiki/Henry_O%27Farrell There is an utterly ordinary small concrete memorial near the sewage U-bend at Clontarf, NSW, where the drama happened. Blink and you would miss it - streetview - goo.gl/maps/txMcDRbqEnuonX8L9
Grave of William Vial - Hero of Clontarf who saved the life of Duke of Edinburgh: https://www.flickr.com/photos/angeljim46/6316485979/in/album-72157627943990487/