Okay, kiddo! So, a long time ago, there was a King named George V who was the King of England. He had lots of children and grandchildren, who are called his descendants.
Now, each of George V's children had their own children, who are called his grandchildren. And the same thing happened with George V's grandchildren - they had their own children, who are called his great-grandchildren.
So, there are many descendants of George V out there in the world today - some of them are still members of the royal family in England, like Queen Elizabeth II, who is George V's granddaughter. Others may be living normal lives like you and me, and might not even realize they're related to a king!
But even if they don't have fancy titles or live in a palace, all of George V's descendants are linked together by their family tree and their connection to their famous ancestor.