I want to know the answer to the following question:
What name did Elizabeth keep as her married name?
All the background I'm provided with is that "The British Prime Minister, Winston Churchill, and Elizabeth's grandmother, Queen Mary, favoured the retention of the House of Windsor, and so on 9 April 1952 Elizabeth issued a declaration that Windsor would continue to be the name of the royal house.". Is that enough to answer the question?
Answer: yes