Isaacs was born in Newcastle upon Tyne, the eldest son of itinerant jeweller Solomon Isaacs (c. 1830 – 30 August 1917) and his wife Pauline (c. 1830 – 14 July 1923), and came to South Australia with his parents and their family around 1865[1] and settled at 4 Tavistock Street, Adelaide.
His father opened a jeweller's and watchmaker's shop in Rundle Street, where by 1875 Isaacs was being employed.
He became a leading lay member of Adelaide synagogue's congregation: He travelled extensively throughout South Australia, particularly the north as far as Oodnadatta, where he founded a literary society.
[5] Citing health reasons, Isaacs left for Melbourne in May 1904,[6] where his reputation had preceded him and was soon just as immersed in the Jewish community there as he had been in Adelaide.
Solomon Isaacs (c. 1830 – 30 August 1913) and his wife Pauline (c. 1830 – 14 July 1923), married at Sernas Golenz, Germany, on 6 October 1855, lived in Newcastle upon Tyne, emigrated to South Australia aboard Sophia around 1865[1] Their family included: