Sources: (1) Daily Constitution, The (Atlanta, Georgia) dated October 27th, 1880: --
AN AUSTRALIAN TRAGEDY–
The latest papers received from Melbourne give an account of a shocking affair which occurred at the Opera-House of that city on the evening of the 24th of July,
Mr. J[ohn] J[ames] MacGregor Greer shot his wife [Annice] and M. A. L[ouis] Soudry, one of [the] members [sic] of the French commission appointed in connection with the Melbourne exhibition, and afterward attempted to take his own life.Mr. & Mrs. Greer and [A.] M. [Louis] Soudry were fellow passengers to Australia, by the steamer - Garonne, which left Plymouth, [England] on the 26th of May last, and during the voyage an intimacy sprang up between [A.] M. [Louis] Soudry and Mrs. [Annice] Greer.
On arriving at Melbourne, Mr. [John James MacGregor] Greer consulting a solicitor on the subject of obtaining a divorce from his wife, but was advised to send his wife home again to England.To this the lady objected, and avowed her love for [A.] M. [Louis] Soudry.Subsequently Mrs. [Annice] Greer induced her husband to take her to the Opera, and they were seated in the dress-circle when [A.] M. [Louis] Soudry came up and spoke to them.Mr. [John James MacGregor] Greer, without uttering a word, drew a revolver and shot him in the head.He then fired at his wife and wounded her in the head, and fired a third shot at a friend of [A.] M. [Louis] Soudry, which missed its mark.Mr. [John James MacGregor] Greer then put the pistol to his own head and fired, the bullet penetrating to the base of the brain.When the man left Mr. [John James MacGregor] Greer was dead, Mrs. [Annice] Greer in a dangerous condition, but [A.] M. [Louis] Soudry was likely to recover.He has resigned his appointment.Mr. [John James MacGregor] Greer was, it is stated, born
Near Coleraine, county Derry, [Ireland] his father being the (Reverend) A. Greer, of the Presbyterian church.
The wife, who is believed to be of French extraction, was married to Mr. [John James MacGregor] Greer at an early age, and it is said, against the wishes of her family.[A.] M. [Louis] Soudry, who is about 32 [born c1848] years of age was formerly accredited to the Philadelphia exhibition of 1876, and then to that held at Sydney last year.