He was extensively quoted in Giovanni Boccaccio's Genealogia Deorum Gentilium, but is otherwise almost unknown.
Outside Boccaccio, there was a Theodontius, who wrote on the wars of Troy, and is quoted by Servius on Aeneid, I, 28; and the fourteenth century author Domenico Bandini, who made an index for the Genealogiae, calls him "Teodontius Campanus diligens investigator poetici figmenti".
Carlo Landi argued in his 1930 monograph Demogorgone that Boccaccio's Theodontius was a Campanian philosopher, from between the 9th and 11th centuries.
Most significantly, he is Boccaccio's source for the idea that all the gods were descended from Demogorgon, which Theodontius himself credited to Pronapides the Athenian.
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