Queen Elizabeth I was Henry's second daughter. She was a powerful queen who ruled for more than 40 years. When Queen Elizabeth I died, she had no children, and in 1603 James VI of Scotland (the son of Mary, Queen of Scots) became King James I of England. He called his two countries "Great Britain", but they were still separate countries with their own parliaments and laws, even though they were in personal union. They shared the same monarch.