When and why did the Royal Family stop using their actual surname of Glucksburg?

Its not an attractive name, it sounds like a word to describe vomiting, "I drank 14 pints of real ale last night, and I glucksburged all over the place". etc.

Prince Philip changed his surname before he married Elizabeth. So thats reason.

It was Saxe-Coburg but they changed it to Windsor at the first world war. Basically all the Royal families of Europe were descended from Queen Victoria , as was Prince Philip.

It's German, and they probably didn't want a name that sounded so German.

Hi so they changed to Windsor back in 1917.

The royals have 'Houses'. The current House being '.... of Windsor'. The two Princes, William and Harry used a 'surname' - Wales, when in the Services. Otherwise they tend not to use a surname at all.

It's not English enough

Prince Philip changed his surname before he married Elizabeth. So it was never a name used by the Royal Family.

They never had it. The Duke of Edinburgh was on a cadet branch of the House of Schleswig-Holstein-Sonderburg-Glücksburg but his surname was Battenburg. He changed his name to Mountbatten on becoming a British subject before his marriage.

You'll end up in the Tower my girl.