Petrus Gyllius

Petrus Gyllius or Gillius (or Pierre Gilles) (1490–1555) was a French natural scientist, topographer and translator.

Gilles was born in Albi, southern France. He travelled and studied the Mediterranean and Orient, producing such works as De Topographia Constantinopoleos et de illius antiquitatibus libri IV, Cosmæ Indopleutes and De Bosphoro Thracio libri III, and a book about the fish of the Mediterranean Sea. Among others, he spent the years 1544 to 1547 in Constantinople, where he had been sent by the King Francis I of France in order to find ancient manuscripts. He discovered a manuscript of the geographical work of Dionysius of Byzantium and wrote a Latin paraphrase of it. Most of his books were published after his death by his nephew. He also translated Claudius Aelianus in 1533. He died in Rome of malaria, while he was following his patron, Cardinal Georges d'Armagnac.

Petrus Gyllius (as Pierre Gilles) plays a small but significant role in the book, Pawn in Frankincense, the fourth volume in the historical fiction series, The Lymond Chronicles, by Dorothy Dunnett.

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