Matilda, Lady of the English (English Queens & Wannabes, Part 4)
400 years before Edward VI’s succession concerns, England faced the question of female rule for the first time, and the ultimate answer was very different. Matilda set a precedent for female power to be wielded in a less direct way, through male heirs or husbands, but her precedent was set through 20 years of civil war.
Sources:
She-Wolves: The Women Who Ruled England Before Elizabeth, Helen Castor