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Just found two other pieces of information from two different researchers. One shows John Grant Rencher married to Ann Lewis as you do, but the other researcher shows him married to Ann Nelson. Both have Samuel as the first son born about 1783. The parents of John Grant Rencher are shown as John Renshaw and Elizabeth Grant. This John Renshaw might be the son of the John and Frances Renshaw who was born in 1685. If this is true, that would explain why you can't find John Grant Rencher on a Ship's Passenger List - he was born in MD or VA rather than Ireland. It is likely that this Renshaw family came from Somerset, Eng. since they were among the first settlers of Somerset Co., MD. People during that time period tended to settle in areas like "home" and named the new area the same name as back home. For instance, when settlers from eastern NC, Pasquotank Co., moved to eastern TN, they named the new village Pasquotank. Later it was shortened to Pasquo, and then Tank. I believe the area is still called by a shortened version of Pasquotank today. Hope something in this will help.