Adriaen Thomasz. Key (c. 1544-after 1589) Painter Adriaen Thomasz. Key of Antwerp was a pupil of Willem Key, a distant relative. Key's work in the 1570s reveals considerable similarities with that of his teacher. While he made altarpieces for several churches in Antwerp, he was known above all as a portrait painter. Characteristic of his early portraits is the objective d...