Ok kiddo, so the Earl of March was kinda like a boss in medieval times. He was a really important person who had a lot of power and authority. The title "Earl" means he was a member of the nobility or upper class.
Think of it like being in charge of a whole bunch of people – the Earl had a big castle and lots of land, and all the people who lived there had to do what he said.
But being the Earl wasn't just about telling people what to do – he also had to make sure everything was running smoothly. He might have had to make decisions about things like farming, trade, or even war.
Sometimes there were other Earls who might want to challenge the Earl of March's power, so he had to be pretty tough and know how to defend himself and his land.
Overall, the Earl of March was a really important person in medieval times, with a lot of responsibility and authority over a whole bunch of people.