A Venetian family that furnished four Doges to the Republic,
he most illustrious; chosen Doge in his eighty-fourth year, assisted the Crusaders of the Fourth Crusade with ships; joined them, when blind and aged 90, in laying siege to Constantinople; led the attack by sea, and was the first to leap ashore; was offered the imperial crown, but declined it; died instead "despot" of Roumania in 1205, at 97.