Okay kiddo, once upon a time in ancient Rome, there were people who really liked art and history. They got together and created a group called the Guild of Romanists. This group was like a big club for people who wanted to learn more about Roman art, culture, and history.
They would have meetings where they would talk about all the cool things they had learned and share their own artwork or collections. It was a way for them to connect with other people who shared their interests.
The Guild of Romanists was kind of like a museum, but instead of just looking at things, they would discuss and learn about them together. It was also a way for people to show off their knowledge and impress each other with their expertise.
So basically, the Guild of Romanists was a group of people who loved everything about ancient Rome and wanted to learn more about it while also sharing their own knowledge and work.