These are my sources for John Jay and Elizabeth. I don't have any children noted for them.
Greenwood County (SC) Sketches: Old Roads and Early Families by Margaret Watson, c1970, pg 227-232- notes lived in Laurens County- notes Jay 7500 Marriages from Ninety-Six and Abbeville District, South Carolina, 1774-1890, compiled by Larry E. Pursley, c 1980, pg 95 - notes Jay Person County, North Carolina Marriage Records 1792-1868, by Katharine Kerr Kendall- notes John Jay
E-mail dated 13 Feb 1997 from RPhill8596@aol.com to Jay family genealogy list JAY@rmgate.pop.indiana.edu
Foshee Family of America Reunion Newsletter 2001 by Barbara A. Hunt, descendants list of Charles Fooshe-notes surname of spouse only
-The only sister I have listed for Elizabeth is Susannah who married Stokes Allen.