The Nuttall Encyclopedia
The practice which existed in Corsica and Sicily on the part of individuals of exacting vengeance for the murder of a relative on the murderer or one of his relations.
Wood, James, ed. Entry for 'Vendetta'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/v/vendetta.html. Frederick Warne & Co Ltd. London. 1900.