The Earl of Sandwich Probably Didn't Invent the Sandwich
The story is too good, which should have been the first clue. John Montagu, the 4th Earl of Sandwich, was a notorious gambler. In 1762, so the legend goes, he was so deep in a card game at a London club that he refused to leave the table to eat. He ordered his servants to bring him meat tucked between two slices of bread so he could eat without putting down his cards. His companions, impressed by the efficiency, ordered "the same as Sandwich." A name was born.
The problem: people had been eating meat between bread for thousands of years before Montagu touched a playing card.
At Passover, Jews have observed the Hillel sandwich since the first century BCE, bitter herbs and lamb wrapped in matzo, named for the rabbi who popularized it as a way of combining the symbolic foods of the seder into a single bite. Roman soldiers ate bread with salt pork and olives on the march. Medieval European laborers carried bread stuffed with whatever was cheap and portable. The idea of putting filling between bread is not a discovery. It is an inevitability.
What the Earl actually did was make it fashionable. When a titled English aristocrat eats something in public, other titled English aristocrats start eating it too, and eventually everyone else follows. Montagu didn't invent the concept, he branded it. His name stuck because his class had the social leverage to make it stick.
The earliest written record of the word "sandwich" in its food context comes from Edward Gibbon's diary in 1762, who noted seeing men eating "a bit of cold meat, or a Sandwich" at a London club. No invention. Just a name applied to something that already existed.
The Earl of Sandwich gets credit the way many people get credit: by being prominent, at the right moment, in front of someone who wrote it down.