YankeeRoots on Family Tree Circles

Captain Benjamin Mordantt, (perhaps born 1700-1720, in England, probably Guernsey or Jersey in the Channel Islands) father of Mary (who married Mesach Bell, Jr., of New Castle, NH), and Margaret (Marguerite), who married Benjamin Randall (founder of the Free Will Baptist Church denomination), also of New Castle, NH. Mordantt seems not to have had male offspring - at least none that survived to adulthood. His grandsons Frederick Mordantt Bell and William Mordantt Bell fought in the Revolution. Frederick died at the Battle of Stillwater. Being a sea captain, Benjamin's records could be almost anywhere. His name has been spelled Mordant and Morden, even Mordaunt. A short blurb about him appears in several books from the late 1800's, one hints that he is descended from an aristocratic family; the Mordaunt family of England, more than likely (with connections to the Spencer family and its descendants, such as Winston Churchill and Princess Diana). I am DESPERATE for any information on him. I came up pretty empty at the LDS Family History Library, and a brief search of Channel Island genealogies came up empty - even the very nice Mordaunt family website has no difinitive information on him. There are Mordaunts on Guernsey and Jersey, but their ancestry comes from Devonshire in the 19th century, so probably not directly related. HELP!!!