While technically her legal name remains Meghan, Duchess of Sussex, she explained that “Sussex” is often used informally within the family as a shared surname for her, Harry, and their children, Prince Archie and Princess Lilibet.

In the end, the International Women’s Day post that sparked the discussion was meant as a simple tribute to her daughter. But, as often happens with the Sussexes, even a small caption was enough to ignite a wider conversation online.