The deceased's father, James Duff Bright, was born in 1838 in Kent, England and married Sarah Topley on 29 October 1862 at Bishopsgate, London. His wife was born 9 September 1841 in Kent. The marriage produced 14 children. Of the 5 girls and 9 boys in this family, born between 1863 and 1887, Rosa Eliza was the eighth child and youngest daughter. Her death was certified to in writing by her older brother, William, born 1868. Sarah Topley died on 5 February 1892 in Kent, England.
After arriving in Brisbane in 1908, the family had found their way to Western Australia and James Duff was known to be prospecting at Niagara, Menzies, Coolgardie with his daughter Rosa, son William and Harriet. On 28 September 1920 he arrived back in London and died in Kent on 29 July 1927.