Richard III of England was a ruler.
Lord Protector . Lords Protector ) is a title that has been used in British constitutional law for head of state . It is also a particular title for the British heads of state in respect to the established church . Richard III of England . When his brother King Edward IV died in April 1483 , Richard was named Lord Protector of the realm for Edward 's son and successor , the 12-year-old Edward V .