You'll find that "Andrew Rose" was also recorded by Jim Mageean on a vinyl recording - "Of Ships...And Men."

It is apparently a true story and as a result of the cruelty imposed on a sailor Andrew Rose, the first and second mate were transported for life. The ship's master Captain Rogers was executed at Liverpool on the 11th September, 1857. It was carried out in the presence of a crowd of 50,000 people.

Incidentally, Captain Rogers was a Swansea man.