Defined as a half-caste, Jimmy Governor challenged the white man’s Aboriginal stereotype of 1900 – he was highly intelligent, better educated than many of his white contemporaries.
Touchy about his colour, Jimmy was stung by reports that Mrs Mawbey and Helen Josephine Kerz, a schoolteacher who lived with the Mawbeys, had taunted his wife for marrying a blackfellow. With Underwood he confronted the women, who were alone in the house with seven children and Mrs Mawbey’s 18-year-old sister Elsie Clarke, on the night of 20 July 1900. Jimmy alleged that the women laughed at him and Helen Kerz said: ‘Pooh, you black rubbish, you want shooting for marrying a white woman’. Losing all control, the two, with nulla-nullas and tomahawk, killed Mrs Grace Mawbey, Helen Kerz, and Grace (16), Percival (14) and Hilda Mawbey (11); Elsie Clarke was seriously injured.
Underwood was quickly caught but Jimmy and Joe Governor, calling themselves ‘bushrangers’, went on a fourteen-week, 2000-mile (3219 km) rampage, terrorizing a wide area of north-central New South Wales. Seeking revenge on persons who had wronged them, they killed Alexander McKay near Ulan on 23 July, Elizabeth O’Brien and her baby son at Poggie, near Merriwa, on 24 July, and Keiran Fitzpatrick near Wollar, on 26 July. After committing numerous robberies as far north as Narrabri, and in the Quirindi district, they moved into the rugged headwater country of the Manning and Hastings rivers, pursued by Queensland black trackers, bloodhounds and hundreds of police and civilians. Exulting in outwitting their pursuers, the Governors blatantly broadcast their whereabouts and wrote derisive notes to the police. On 8 October the government offered a reward of £1000 each for their capture.
After several close escapes Jimmy was shot in the mouth by Herbert Byers, a hunter, on 13 October; in a weakened condition he was captured by a party of settlers at Bobin, near Wingham, on 27 October. Joe was shot dead by John Wilkinson north of Singleton on 31 October. They had been outlawed on 23 October.
Jimmy stood trial on 22-23 November in Sydney for the murder of Helen Kerz. He was defended by