David Alan Stevenson and Charles Stevenson designed lighthouses too. Thomas' son chose not to be an engineer. His name was Robert Louis Stevenson and he was a famous writer.

Bradford Torrey. 1 The Life of Robert Louis Stevenson. By GRAHAM BALFOUR. Near York: Charles Scribner's Sons. 1901. "Robert Louis Stevenson" by Bradford Torrey, The Atlantic Monthly, June 1902.