… Era d’eta d’anni 80 lasci o 10 figlioli maschi e 2 femmine.’ London, British Library, Leonardo da Vinci, Notebook (‘The Codex Arundel’), Arundel MS 263, fol. 272. See also Uzielli, Ricerche intorno a Leonardo, 73; and Villata, Leonardo, 202, cat. VI.82. 56 ‘Mercoledı a ore 7 …