English county histories are like books that tell stories about different parts of England. Each book is about one county, which is like a big area with lots of towns and villages inside it.
Just like how a baby grows up and has different experiences, each county has its own unique history or story. The books tell us about the important people who lived there a long time ago, what the towns and villages looked like, and how the people who lived there spent their time.
Think of it like a really long bedtime story, but instead of a princess or a dragon, it's about real people and places from a long time ago. Reading these books helps us learn about English history and how it has changed over time.