Isabella's father was the publican of a hotel in Dulbydilla. Isabella's parents were married on 4 May 1872, in Roma, Queensland (Marriage Registration 1872/C/580). Isabella was the third of their eleven children. The others were: Edward born 6 December 1872; Charles Lachlan born 10 October 1874; Anne Mary born 28 February 1879; Florence Jeannette born 18 February 1881; Norman William 19 August 1883; Mabel May born 22 October 1885; William born 1 July 1887; Hilda Mary 28 June 1889; Alfred James Thomas born 15 October 1891; Frederick Adolphus born 3 October 1894. The children's father died in Blackall, Queensland 2 November 1898. His wife died 8 September 1899 in Blackall.