Many may be familiar with the works of the Scottish writer, Robert Louis Stevenson, but few outside Scotland may be aware of his grandfather, also named Robert. Robert Stevenson the senior was a prominent architect and designer of lighthouses up and down the coasts of Scotland. In his lifetime, he was responsible for the establishment of over a dozen lighthouses. He served as the engineer of the Northern Lighthouse Board for nearly five decades. In 2016, he was inducted into the Scottish Engineering Hall of Fame. His most well-known achievement was…