Roger of Helmarshausen

He is first heard of in connection with Stavelot Abbey in the Meuse valley, a centre of Mosan art, and especially goldsmith's work.

In 1107 the relics of Saint Modoald were translated from Trier to Helmarshausen Abbey, and the escort stopped at St. Pantaleon's on the way.

[2] In conjunction with the well-known scriptorium, where the Gospels of Henry the Lion were produced later in the 12th century, he created several important works in the Romanesque style, including various illuminated codices, as well as many pieces of jewellery.

Roger has been proposed by a number of academics (for example, Albert Ilg (1874) and C. R. Dodwell (1961)) as the real author of the important medieval treatise De diversis artibus (also Schedula diversarum artium), which is ascribed to the pseudonymous Theophilus Presbyter.

[3] This suggestion is not universally accepted, but has been supported by other academics, including Cyril Stanley Smith (1963 and 1974), Lynn White Jr. (1964) and Eckhard Freise (1981).