The Nuttall Encyclopedia
Born at Aix; disinherited owing to his misconduct; turned author, and became a protégé of Frederick the Great, but lost caste with him too, and was deprived of his all once more (1704-1771).
Wood, James, ed. Entry for 'D'argens, Marquis'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/d/dargens-marquis.html. Frederick Warne & Co Ltd. London. 1900.