Inventor one Of Ireland's Greatest Ever Inventors   Sir Francis Beaufort Of Navan, Co. Meath   Francis Beaufort was born into a family with a great interest in plotting maps which was his fathers masterpiece with the drawing board. His Irish credentials are largely his native place of birth and as a young boy he drifted between Ireland and Wales until he was aged fourteen.   He left his schooling behind to go on the open high seas but he…