I am wondering if your (my) Nancy Agnes Alexander who married Samuel Wauchope/Walkup was the daughter of John Alexander and Anne Axtell?
I descend from Thomas Axtell who migrated to MA and married Mary Ann Rice. Their daughter Mary Axtell m. Joesph Goodnow.I am seeing that Thomas may have had a brother Daniel Axtell whose granddaughter Ann Axtell married John Alexander and were the parents of Nancy Agnes Alexander.
These two Axtell brothers may have been sons of William Axtell and Tomasine unk, born in the 1590 range in England.
I also descend from Samuel Wauchope/Nancy Agnes Alexander whose daughter Margaret married William Gay. Their son Robert Gay married Margaret Lockridge; their daughter Sarah Gay married William Campbell, and their daughter Margaret Campbell married Thomas Gillham. All of these names are well documented in "Chronicles...' and were all Scots-Irishmen from Ireland arriving here sometime before 1744 when they are documented there in Calfpasture/Va.
I just discovered this Alexander line recently and now lookijng at the connections that may be showing up.If any of this fits with what you have, I would be grateful to see if I am at least on the right road.