In a letter to the
Sydney Monitor on 18 August 1830, Laurence H. Halloran states that 'it is a generally known fact, that for the last two or three years my writings in the public journals have born the signature, "Vindex"'.
Halloran's letter was prompted by reading a 'Notice to Correspondents' published in the
Sydney Gazette, declining publication of a letter from 'Vindex'. The rejected letter was not written by Halloran and, although he readily admitted 'the right of a public writer to assume any signature', he wished the public to know that he disclaimed authorship of the rejected letter.
Source:
Sydney Monitor, 5.299 (18 August 1830): 2.