George MacHenry was educated for commercial life, was employed for some time in a Merchant's Office in Liverpool, England, and may have visited America. He came to Australia and took up the management of the large estate owned by his father in Pirie Street, in the city of Adelaide, which he retained until 1876. He donated a volume of his poetry, Time and Eternity: a poem, published in San Francisco in 1871, to the library of the North Adelaide Institute in 1872. (It is likely that another work, The Helleniad, an epic poem, founded on events connected with the successive invasions of ancient Greece by the Persians, which had been published in London in 1850, was also by him.) He returned to England, coming back to South Australia a few years later. During this time he published the play The Labyrinth of Crete: a drama in five acts (1889). In 1890 he left the colony finally, taking up residence in England.
Source: Adelaide Observer 11 April 1896: 28. This obituary does not provide exact dates of birth and death.