Adolf died suddenly whilst working in an open cut at the Youanmi Gold Mine. The deceased was the youngest of three children born to Frenchman, Ernest Jules, who was born in Paris in 1832. Ernest arrived in Port Phillip Bay on 5 April 1856 and married Caroline MacNartney, born 1837 in Clare, Ireland, on 8 August 1863 at Ballarat (Marriage Registration 2749/1863). Their first son, John O'Heir was born 7 May 1861 in Geelong and a daughter, Caroline, arrived in 1864 in Buninyong, near Ballarat. Two years after the birth of Adolphe, in 1866, in December 1868, Adolphe's mother, Caroline, died, and his father, Ernest, married Mary Baxter in 1868 (Marriage Registration 1845/1868, Victoria).