OK, I'm going to do this correctly this time. Jane that was born to Alexander in the mid 1740's married Thomas Walker. Her children were Alexander and Robert. There are no records of this Robert in the book I'm looking at but Alexander (the son) married Esther Gaston the dtr of Justice John and Esther Waugh Gaston.
Jane born 1777 to Matthew, son of Alexander (above) m. George Reid