Why george V adopted the name winsdor as the surname of the Royal Family?

King George V adopted the name Windsor for the Royal Family in 1917 as a response to anti-German sentiment during World War I. The British royal family had been known as the House of Saxe-Coburg and Gotha, which highlighted their German heritage. By choosing the name Windsor, derived from Windsor Castle, he aimed to reinforce a sense of British identity and unity amidst the war. This decision marked a significant shift in the monarchy's public image.