Francisco S. Fuentes was a wine expert engaged in the late 1870s by the newly-founded South African Wine Growers' Association to help revive the deteriorating wine industry in the Western Cape, following the introduction of phylloxera in 1873. By that time he had already written A short manual on the manipulation of wines (Cape Town, 1872, with a separate Dutch edition), a pamphlet containing some elementary instructions for wine farmers. By 1879 he had become a member of the South African Philosophical Society, remaining on the list of members to 1883. At the meetings of the society in February and March 1881 he read two papers on viticulture. The first, "Notes on the soils and manures suitable for the cultivation of the vine at the Cape", was illustrated by some diagrams prepared by the Vine Diseases Commission. The second was titled "On the vine and its culture".
Fry was declared insolvent in 1883, and appears to have been employed in the Public Works Department of the Cape Colony around 1900.