Hendrick de Fromantiou: A Master of Trompe l'oeil and Royal Patronage Hendrik de Fromantiou (1633 – after 1693) stands as a pivotal figure in Dutch Baroque painting, celebrated primarily for his innovative use of trompe l’œil—a technique that brilliantly deceived the eye—and his influential role advising Frederick William III, Elector of Brandenburg. Born in Maastricht, Netherlands, Fromantiou's artistic journey unfolded against the b…