The Shadow of the Southern Netherlands The life of Thomas Mathisen remains a puzzle of movement and shifting identities. Born in 1610, his origins are a subject of quiet debate among those who study the era. While many believe he was born in Antwerp, some researchers suggest his roots may lie in Husum, a town in Denmark. This ambiguity follows him through the historical record, much like the various names he used to sign his work. He was known to some as Thomas Matthiæ or simply Thomas Mathisen, and in certain circles in Rome, he was identified by the name De Vrome. His training took place…