The story that a royal chef invented A.1. Sauce for George IV is everywhere online — and it’s wrong. The real inventor, Henderson William Brand, created it decades after the king’s death, for the International Exhibition of 1862.
This is a companion discussion topic for the original entry at https://www.etymonline.com/columns/post/a.1.-sauce-was-not-invented-for-king-george-iv:-the-real-history-of-h.w.-brand