Tony, Re your MANSFIELD family, the Reference QS/21/1759/16 at Plymouth &
West Devon Record Office gives a Samuel Mansfield in 1759 as.... Master Caulker
in HM Yard and Captain of a company in Col. Frederick Rogers regiment doing
duty in the dockyard at Stoke Damerel (aka Plymouth Dock or Devonport).
PWDRO have a further record of him in 1761 under QS/21/1761/16.