Coat of arms of Leonardo I Tocco as count of Cephalonia, based on a relief at the tomb of his daughter, Petronella Tocco, at the Church of San Giovanni e Paolo, Venice
Own work based on: Arms of Robert de Tarente.svg 

Source and historical background: Brendan Osswald (2018), «Les armoiries des Tocco de Céphalonie dans la citadelle intérieure de la forteresse d’Arta», Bulletin de correspondance hellénique, 142.2, DOI : https://doi.org/10.4000/bch.689
Constantine Plakidas