Did your ancestor own a firm in New South Wales between 1903 and 1922? If so, you may be able to trace information about them and their company through the Index to Registers of Firms, 1903-22
The Index to Registers of Firms, 1903-22 from State Records NSW will tell you the name of the person registered as owner of the firm under business registration details. Even if your ancestor was not a registered owner they may be mentioned in the index if they worked for a firm registered in New South Wales.
In addition the index lists the street address and the nature of the business. Was your ancestor a removalist or a shopkeeper? The Index to Registers of Firms, 1903-22 may settle disputes about the nature of your ancestor’s business and where it was located.
For more information about the Index to Registers of Firms, 1903-22 and the background to companies registration click on this link to State Records NSW: