 Jean Chapelain, Amable de Bourzeys, and Jacques Cassagne (the King's librarian) were also appointed.Using his influence as Colbert's administrative aide, in April 1667 he was able to get his brother, Claude Perrault, appointed to a committee of three, the Petit Conseil, also including Louis Le Vau and Charles Le Brun, who designed the new section of the Louvre, the Colonnade, built between 1667 and 1674, to be overseen by Colbert.The design was chosen over designs by Gian Lorenzo Bernini (with whom, as Perrault recounts in his "Memoirs," he had stormy relations while the Italian artist was in residence at Louis's court in 1665) and François Mansart.