Thanks for sharing that with me, Virginia! That takes that possible connection away from my Frederick!
I'm going to give you the two early SC references in case some of the names mentioned might pop up in your study.
17699 Jan 1769; FREDERICK BRIGGS & Joshua [mark] Hodges are witnesses for Lawrence Easterwood to Philip Dill, 100 acres SW side Great Pee Dee River, Craven Co. [LangleyDeeds IV: 101]
176927 April;FREDERICK BRIGGS & William Pegues are witnesses for Philip Dill to Claudius Pegues. Philip is selling 396 acres, Craven Co., NE side of Great Pee Dee River and 200 acres on SW side of Great Pee Dee River. Same witnesses for both [Langley Abstract Deeds IV: 101 & 102]