There are descriptions of 3 JACKSONs at: /Biographia Navalis; or, Impartial Memoirs of the Lives and Characters of Officers of the Navy of Great Britain From the Year 1660 to the Present time: Drawn from the most Authentic Sources, and disposed of in a Chronological Arrangement/. John Charnock, Esq. London 1795 http://www.archive.org/details/biographianaval03chargoog -- Sharon Oddie Brown, Roberts Creek, BC, Canada. History Project: www.thesilverbowl.com