(Aug 25, 1619, Aix-en-Provence – Dec 24, 1695, Paris), Catholic theologian and canonist. He joined the Oratorians in 1633 and served as professor of theology at Saumur (1648) and Paris (1653). Removed from his teaching duties on account of doctrinal differences, after 1673 he devoted himself to historical studies, primarily applying historical methods to the study of canon law.
P. Clair, Louis Thomassin, 1964 (bibl.; Fr.)
F.J. Busch, Lex Christi secundum naturam, 1975 (Ger.)
H.J. Sieben, Die katholische Konzilsidee von der Reformation…