"The story of John Harrison is well known. How he created an accurate regulator, made the sea clocks H1, H2, H3 and H4, has been documented in academic books, in popular literature, film and how he was the father of the marine chronometer. His quest to win the ¹20,000 prize, as defined in the Longitude Act of 1714, runs through the John Harrison story. However, little has been written about the other members of his family. His brother James was a very skilled and pragmatic person. From him three generations followed all involved with bells and clocks. The third generation, James Harrison of Hull, was the last of the Harrison clockmaking line."