Bertram, Master (lived late 13th to early 14th century)

German painter. Trained in the 14th-century School of Prague, he settled in Hamburg around 1367, where he had a busy workshop. His naive realism shows a tendency towards the Gothic manner. His principal work is the altarpiece for the Petrikirche, Hamburg, 1383 (now in the Kunsthalle, Hamburg).

Other examples are six paintings in the Musée des Arts Decoratifs, Paris, and a large altarpiece with 45 scenes of the Apocalypse (Victoria and Albert Museum, London).