Historians who tired of seeking origins that mattered much probably risked losing their licenses oh, 1.4 centuries ago. That’s when they scattered like quail in a hailstorm trying to identify the “inventor” of the hamburger.
One of the few points of agreement is that they were introduced during the 1880s, depending on how deeply one wishes to delve. Some contend hamburgers originated in Tulsa, OK. No, screams a Texan, it was in Athens, TX. Still another insists that the first real hamburger was hawked at the St. Louis World Fair in 1905.
Still others (probably the loonies who have tried too hard ...