 It has been speculated that his frequent moves from one city to the other were motivated by his financial difficulties.In the years 1557 and 1558 he was in Florence where he worked mainly as a glass painter on commissions for Duke Cosimo I de Medici and his court.The Flemish priest Adriaan de Witte who was chaplain of the guard of the Duke played a role in calling van den Broeck to the Ducal court.