Verified answer

The work of Benjamin Thompson, an American Tory, led to the destruction of the caloric theory. He went to England at the time of the revolution and got a job boring cannon from solid brass tubes. He realized that the endless supply of heat released was better related to the energy put into the drill than to a caloric fluid present in the brass. By measuring the energy input into the drill and the output of heat energy he proved the process. He became Count Rumford for his achievements.

Lord Kelvin.

:P

We all know Count Rumford made the rum, so he couldn't do the CTOH.

count rumford is correct