He was born in Sherborne, Dorset, and was probably educated in Bourchier's household before being admitted to Eton College as a king's scholar about 1447.
Doget was sent to Rome to help arrange a peace between Pope Sixtus IV and Florence in 1479, dealing also with the princes of Sicily and Hungary.
At some time between 1473 and 1486, he presented his Examinatorium in Phaedonem Platonis, the first philosophical work by an English humanist, to Cardinal Bourchier.
Because of this he deals principally with an explanation of obscure passages in the Phaedo, which are presented so as to emphasize their common points with Christian doctrine" (Weiss, p. 166).
The neoplatonic texts cited by Doget, which include Marsilio Ficino's Latin version of the Pimander, or Poemander, of Hermes Trismegistus, are seen through the prism of Christian apologetics, and the Phaedo was no doubt chosen in the first place as a vehicle for his commentary because it could be presented as a mythologized version of Christian doctrine.