Where was the fair located in the book Catherine called birdy?

In the book "Catherine, Called Birdy" by Karen Cushman, the fair is located in the nearby town of Stonebridge. Catherine and her family attend this fair, which features various attractions, including vendors and entertainment. It serves as an important backdrop for the story, highlighting the social dynamics and events of medieval life. The fair is a significant setting that allows Catherine to experience a glimpse of freedom and excitement outside her daily life.