Robert Guiscard became a local ruler in Southern Italy. Later he increased the area he controlled by luring his neighbour, Petros of Bisignano (Teras), to meet him for an important discussion. Petros came with an escort, but Guiscard pretended to be frightened of them, so Petros sent them back. When the two were alone, three of Guiscard's men galloped up and carried Petros off to slavery and torture