I'm currently reading a book about Arthurian myth, and it claims that pages in the time period could be both male and female. Of course, it is fictional, but this specific claim is presented entirely as a fact.

The specific definition used for a page in the book is: "young boys or girls between the ages of ten and fifteen who are learning the ways of courtly life by observing their elders and doing those tasks assigned to them"

Under this specific definition, were there "page girls" in 5th century Britain?