Okay kiddo, let me tell you a story about Tuathal Techtmar!
A long, long time ago, in a land called Ireland, there was a king named Tuathal. He was very clever and very brave, and he managed to unite all the different tribes of Ireland under his rule.
But Tuathal knew that being a good king wasn't just about being strong and brave; it was also about being fair and wise. So he set out to create a new system of laws that would apply to everyone in Ireland, no matter what tribe they came from.
This system was called the Brehon Law, and it was one of the most important things Tuathal ever did. It made sure that everyone was treated equally, no matter if they were rich or poor, powerful or weak.
Tuathal wasn't called "Techtmar" for nothing! It means "the rightful," because he was such a fair and just king. And even though he lived a very long time ago, his legacy still lives on in Ireland today.