ON THIS DAY. JULY 17, 1917. Saxe Coburgpalace renamed WINDSOR
Nazis (SaxeCoburg Gotha Glucksburg) were posing as British Royal, stolen crown.
High anti-German sentiment amongst the people of the British Empire,during the First World War, reached a peak in March 1917, The king and his family were finally persuaded to abandon all titles held under the German Crown and to change German titles and house names to anglicised versions. Hence, on 17 July 1917,
https://en.wikipedia.org/wiki/House_of_Windsor