The Quaker Mill Company, which would later become Quaker Oats, started in Ravenna, Ohio.
Johnson's "A Dictionary of the English Language" described oatmeal as a grain "which in England is generally given to horses, but in Scotland supports the people."
The Scots have eaten oatmeal for centuries; the grain itself grows well in that part of the world due to that country's low temperatures and high humidity.
According to some historians, the wild ancestors of modern oats were prevalent in Asia. But they weren't domesticated until sometime in the first millennium BCE in what is now Central Europe.
Oats are one of humankind's earliest cultivated foods. In fact, the ancient Chinese knew all about the grain.