F. Francken III, the last of his name who deserves to be recorded, entered the Antwerp guild in 1639 and died at Antwerp in 1667. His practice was chiefly confined to adding figures to the architectural or landscape pieces of other artists. As Frans Pourbus sometimes put in the portrait figures for Frans Francken II, so Frans Francken III often introduced the necessary personages into the works of Pieter Neefs the younger (museums of St. Petersburg, Dresden and the Hague). Wikipedia
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