The Nuttall Encyclopedia
A noted criminal and assassin that figures in French plays; was convicted of a murder in trial by combat with a witness in the shape of the dog of the murdered man.
Wood, James, ed. Entry for 'Macaire, Robert'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/m/macaire-robert.html. Frederick Warne & Co Ltd. London. 1900.