Johann Theodor de Bry, the elder son and pupil of Dirk De Bry, was born at Liège in 1561. He greatly assisted his father in the important works in which he was engaged, as, for instance, the 'Florilegium novum,' which was published at Frankfort in 1612, and with the assistance of his brother Johannes Israel, he completed the two volumes of Boissard's 'Romanae urbis Topographia et Antiquitates,' which were left unfinished at his father's death. He also published 'Emblemata secularia,' 1596, and added considerably to the collection of Portraits of Illustrious Persons, begun by his father. He died at Frankfort in 1623. His prints are signed with the initials J. T. B., or with a monogram.