Gian Giacomo was nicknamed "Salaì" or "il Salaino" meaning "the little devil". Vasari describes him as "a graceful and beautiful youth with fine curly hair". The "Little Devil" lived up to his nickname: a year after his entering the household Leonardo made a list of the boy’s misdemeanours, calling him "a thief, a liar, stubborn, and a glutton". But despite Salaì's thievery and general delinquency—he made off with money and valuables on at least five occasions, spent a fortune on apparel, including twenty-four pairs of shoes, and eventually died in a duel—he remained Leonardo's servant and assistant for thirty years. At Leonardo's death he was bequeathed the "Mona Lisa", a valuable piece even then, valued in Salaì's own will at the equivalent of £200,000.