The historical figure known for the phrase "Let them eat cake" is Marie Antoinette, the last queen of France before the French Revolution. This statement is often cited as an example of her alleged indifference to the plight of the poor. Contrary to popular belief, there is no definitive evidence that she actually said this phrase, and it might have been attributed to her by her critics to illustrate her detachment from the struggles of the common people. Nonetheless, it has become a symbol of royal excess and disconnect from societal issues.