Martin Billorin, Martinus Billorini, Dominican, professor of theology, was vice-gérant of the Grand Inquisitor.

A licentiate in theology in 1416, maître régent at Paris in 1425, at the same time as Jean Beaupère he censured the propositions of Brother Jean Sarrasin, in March, 1430.
He is also recorded as teaching in Paris in 1433