an 18th-century painter and interior decorator (wall painter) from the Northern Netherlands. According to Houbraken when he returned from Italy he had with him a copy he had made himself after Nicolas Poussin, which the postmaster of Zwolle bought without asking him who had painted it. When Isaac later declared that it was a copy by his own hand, he claimed the postmaster had never explicitly asked who had painted it, but had wished to see his things that he had brought back with him. This anecdote was told in order to show the popularity of Poussin in the art market of the Netherlands in Gerard Uilenburg's time.
