What happened to Dermot when the king of Thyrone died?

When the king of Tyrone died, Dermot, who was a significant figure in Irish history, found himself in a precarious position. He lost his royal support and faced challenges from rival factions vying for power. This instability prompted him to seek assistance from the Anglo-Normans, which ultimately led to significant changes in Irish governance and the beginning of English intervention in Ireland. Dermot's actions set off a chain of events that had lasting implications for the region.