Peri was separated from him by the Time Lords so that they could cover up the Ravolox conspiracy. According to the Master, Peri was wed to King Yrcanos, but that was just part of the truth. As it turned out, there were several future versions of Peri's life due to interventions of various Time Lord factions. One of these versions of Peri eventually rejoined the Sixth Doctor on his travels. Her unusual name meant, according to her, "she who lives in the hills". (AUDIO: The Bride of Peladon)