Maybe you should try wikipedia. I see your new so you should check the guide lines. If it’s something that you can easly look up in a few seconds, you should do it yourself. Please check the guide lines. I’d give you a link but I’m on my iPhone. Welcome to fluther by the way.

Captain Sir Richard Burton. He was a brilliant India explorer. He had an unparalleled gift for languages.

Read these two books: THE BLUE NILE and THE WHITE NILE. The discovery was complicated (and very interesting) and warranted the books.