On the afternoon of 9 January 1871, Robinson’s butler Simon Cedeno (who was 28 at the time) in response to being teased about his fiancée by housemaids Bridget Murray and Margaret Burke attacked Murray with a long-bladed bread knife whilst she was upstairs. He struck at her head, but a backward movement so diverted the blow that it fell upon her face and chest, which caused Murray to fall to the floor. Cedeno doubtless thinking he had killed her, returned to the kitchen, where he found Burke, who upon seeing Cedeno’s excited manner and the knife covered with blood ran screaming into the dining-room, where were seated Mrs Robinson and Mr Campbell. Cedeno followed her, and after Burke stumbled over some article of furniture, was able to reach and stab her several times before Mr Campbell, immediately followed by Mrs Robinson, were able to restrain him, Mrs Robinson receiving a wound in the hand during the struggle before Mr Campbell was able to take the knife from Cedano and then with the aid of one of Mr Robinson’s grooms take him to the Police Station. Upon arrival of doctors Turnbull and Prins, Burke was found to be dead of three wounds, one of which had penetrated the heart. Murray survived as her breastbone had prevented a fatal penetration. At the trial, where he was represented by
Thomas Joynt, Cedeno claimed that he would have killed Robinson as well, as he was subject to racial abuse; Robinson had left for Cheviot Hills on the morning of the murder. Cedeno was executed at
Lyttelton Gaol on 21 April of that year; the second of seven people executed at that jail. There are varying accounts of where the Robinson household was at the time, with most putting the scene of the murder on Park Terrace. In her book
Ready Money, Robinson's great-granddaughter states that for the summer of 1870/71, they had rented the house of
Frederick Weld on the corner of Cambridge Terrace and Montreal Street. It was in the following year that Robinson bought his house at 52 Park Terrace (these days the site of The George Hotel), as they did not wish to stay in the house again where the murder happened. ==Death and legacy==