Okay, so imagine you have a name. Let's say it's "Smith". But "Smith" is not just one person's name - there are probably thousands, or maybe even millions, of people in the world who have that same last name.
Now, there are some people who are very interested in the history of names like "Smith". They want to know where the name comes from, who the first person was to have that name, and how it has changed over time. They also want to find and connect with other people who have the same last name, because they might be related!
That's where the Guild of One-Name Studies comes in. The Guild is a group of people who are all interested in studying one specific last name. So there might be a guild for the name "Smith", and every member of that guild is focused on learning as much as they can about anyone in the world who has that name.
They might do research by looking through old documents like census records and birth certificates, or by talking to people with the name "Smith" to learn about their family history. They might create a website or a database where people can search for information about the name "Smith".
Basically, the Guild of One-Name Studies is a group of people who really love one specific last name and want to learn everything they can about it. They work together to gather information and share what they've learned with each other, and they hope to help anyone with that last name connect with their family history.