Re: John Ferneyhough of "Sligo" (d.1815)
I am a descendant of Thomas Ferneyhough who was married to Agnes Lucas, daughter of Wm Lucas of Orange County, Va. I have not done exhaustive research on this family, but know a little: There were three brothers, John, Thomas, and Edmund. John lived in Fredericksburg, Edmund in Albemarle County, and Thomas disappeared, from my view, anyway.
I did find a baptismal record for them from England in the Family History Library and will share it, if you like.