Though they shared a name, it’s said the two lighthouse keepers, the towering Thomas Griffith and the middle-aged Thomas Howell, didn’t get along, and could empty pubs with one of their heated arguments. In the winter of 1800 to 1801, the two men were stuck on the most remote island in Wales, 20 miles from shore, operating Smalls Lighthouse. The brutal winter weather turned what should’ve been a month-long stay into a grueling, almost five-month exile. Then, four months into their stay, things got worse. Griffith took ill, according to…