I don't know precisely what records Stockard used to make that statement. I think she relied a lot on interviews of local individuals, because there are a number of significant errors in her work, including about my husband's family. The local records do not support those errors, so I doubt she used them to any considerable extent. My advice would be not to believe statements in that history (or any other) without supporting documentation. Aside from that, there are better histories of Guilford available.
Stockard could have meant Welsh in general, or a group of Welsh Quakers, which included my husband's family. They had been living with other Welsh and English Quakers in Bladen County until the 1770's, when they moved inland to Guilford County. Other Quaker groups moved to Guilford from other areas, including Nantucket and other settlements in the New England and Mid-Atlantic colonies. There was a large Quaker population in Guilford during the late 1700's and the early 1800's, before many migrated to the Midwest.
Are you aware that there were people by the Aydlott or Aydelott surname in New Garden Meeting during the early 1800's?
http://www.ncgenweb.us/guilford/FamiliesQuaker.htmlThese may represent a separate family group from yours, but it would be good for you to be aware of them and investigate any possible connections.
If you find Quaker-style dates and language style in the family wills and other documents, and family members in the Quaker minutes for the area (abstracted by Hinshaw), then I recommend that you consider the possibility that the family may have been Quaker.
Migrations occurred between different areas of Europe, and Protestant groups moved around seeking religious freedom, as we all know. I have never encountered any stories about Huguenots in early Guilford, but that doesn't mean they weren't there.
One branch of a particular family may have become Huguenot or Quaker, but you'll find that other branches usually remained in the older faith tradition. This sometimes led to persecution directed from one family group towards another branch of the same family.