Looked it up
Target: HRH Prince Alfred, the second son of Queen Victoria, who was visiting Sydney as captain of HMS Galatea.
Location: A public picnic and sailor's home benefit at the beachfront pleasure grounds in Clontarf(Sydney, New South Wales).
Assailant: Henry James O’Farrell, an Irish-born man with a history of mental instability and heavy drinking, shot the Prince in the back with a revolver.