Complex sentence: She was the daughter of George, Duke of Clarence, who was the brother of King Edward IV and King Richard III. She was one of two women in sixteenth-century England to be a peeress in her own right with no titled husband.
Split into simpler sentences: She was the daughter of George, Duke of Clarence, the brother of Edward IV and Richard III of England. Margaret was one of two women in 16th century England to be a peeress in her own right with no titled husband.