Hi Michael,

The book you mention was written by Frances Wilkins and is available through St. Paul's Bookstore online.

There is a Captain Thomas Dickson mentioned five times in the book, all as Captain of a slave trader or smuggler in the period 1750 to 1769. He may not be your man as I doubt he was alive in the 1840 period.

There is no mention of a Dickson mariner in Frances Wilkin's other book, "2000 Manx Mariners".

Regards,

Jim Smith