Leo survived the Massacre of the Latins in April 1182. On 7 December 1182, Pope Lucius III wrote a letter informing him of his brother's death in Italy. He sent the letter with Fabrizio and asked Leo to give him details of the massacre. There is no further information about Leo (who must have received the letter in early 1183) and it is unknown if he died in Constantinople or if he ever returned to Italy.