Robert FitzRoy was the Captain of the Beagle that took Darwin around the world on one of the most famous voyages ever. But beyond a famous ship captain, he later became the father of modern marine weather. He invented the concept of forecast, was a champion of the use of barometers, and was the first head of what is now called the UK Met Office.
Indeed, the address of the Met Office in England is:
Devon, EX1 3PB
Which brings us to the point at hand. Note the unusual spelling of his name with a capital R. This is the most common way we see his name in print. But periodically one sees it without this embellishment of the capital R, so I often wondered what was right.
Recently with occasion to browse through old logbooks–we all get our kicks in different ways–I ran across the answer to this question.
Check out the bottom right of this logbook page from the Beagle. You will see his own signature in the style that he at least chose to use in signing his name. That is certainly an important data point in this esoteric study.