 Alternatively, he may have travelled abroad.A stay in Rome is suggested by his early works, which show a similarity with the "low-life" genre paintings of the group of Dutch and Flemish painters active in Rome known as the "Bamboccianti".An influence by the German painter Johann Liss active in Rome in the 1620s has been discerned in de Vos' paintings and may also be explained by a residence in Rome.