There are several marriages between the Chronister family and the Welch family of Lincoln Co, NC.The patriarch of the Lincoln Co Welch family, John Welch's 3rd wife was Margaret Irving.She married second George Whitley.George and Margaret's daughter, Mary Whitley, married Thomas Martindale and they were in SC c 1789 per a deed selling John Welch's land to George and Margaret Whitley.Thomas Martindale supposedly was first married to ? (possibly Elizabeth) Welch, who was the daughter born to Margaret shortly after the death of John Welch in 1769.
I suspect that Nancy Martindale was the daughter of Mary Whitley and Thomas Martindale.
Members of the Welch, Martindale, and Chronister families are all found in Lawrence Co, TN in the early 1800's.
Mary Whitley's much older stepbrother Thomas Welch had a son William Welch who married Eve the daughter of Johann Matthias Kranester (Chronister) in 1783 in Lincoln Co, NC.The father of Abraham Chronister was James and he was Eve's brother.Eve and William Welch ended up in Cape Girardeau, MO.Both died before 1830.Their daughter Rachel Welch Norman was in Cape Girardeau by 1815 as her husband Moses appears in county records.Rachel Welch Norman and Abraham Chronister would have been first cousins.
Hope that this all makes sense! There are quite a few trees posted for Thomas and Mary Whitley Martindale but it seems to me that they are a compilation of several Thomas Martindales.