I came across a will for a Benjamin Lightbourn dated 1 jan 1790 on rootsweb that list many Lightbourns that I believe tie into Turk Islands re: salt trade as slave owner. You may try that. Good luck. He has a daugter named frances Darrell listed who is name I am searching as my gr gr grandmother. Are we connected somehow? Good luck. Another resource is the Turks musueum www.tcmuseum.org.