Brianna

Brianna, formerly known as Brian, and also known as Brie is a fictional character and the deuteragonist of the second half of Merlin's Apprentice. She is portrayed by Meghan Ory

History
Brianna came from a poor family. When she was young, she lost her land to the lord at the time. Eventually, Brianna cut off all her hair, took the clothes off of a dead boy, and mascaraded as a boy ever since. She became a squire for Camelot being disowned by her father after he learned what she had done

Trivia

 * Meghan Ory and John Reardon are married in real life just like their characters.