CoD: Banks of the Ire

We know that Tyr fell twelve years before current events in Myth TFL, and that it did not fall to the Leixians but to The Deceiver and The Watcher. Although it is possible that Maeldun's conflict with Leix happened well before the events of the Great War, we surmise that it may have been the attack of the Leixians that forced the retreat of Maeldun and enabled The Deceiver to enter the West, and start his march to Tyr. Tyr, already weakened from the Leixian attack, would have been ill-equipped to deal with such an assault.