a French jurist and philosopher. After studies at Toulouse, he became an advocate. From 1570 he was professeur of law at Cahors; in 1580 he returned to Toulouse in a similar post. In 1582 he was called by Charles III, Duke of Lorraine to found a law faculty at Pont-à-Mousson, the École doctrinale de droit public. He died at Pont-à-Mousson. His Syntaxes artis mirabilis (1578) was an encyclopedic work on the sciences where magic and demonology were included with Astrology and mathematics. Grégoire is considered to be in the tradition of Raymond Lull. The work was placed on the Index of Forbidden Books.
