I have seen no posting on this family. William Armstrong born 1801 - died 1861 West Twp Huntingdon Co Pa may have marrieda Knox according to according to Annals of Buffalo Valley Pa 1755-1855 page 255 mentions a George Knox, a tanner, whose daughter was Mrs. William Armstrong. Need assurance that this is my Wm Armstrong.
Their children were (born between 1814 - 1818) Thomas Armstrong married a Nancy or Jane and had a daughter Almira. Rachel Armstrong married a Mr. Willson (Wilson) and had a daughter Mary born 1840. Hannah Armstrong died in 1853 married in 1836 James Curry in Huntingdon Co PA and her children are listed in William Armstrong's will as Thomas Curry, John Curry, Rachel Curry, Joseph Curry and William Curry. Another daughter not listed is Agnes Curry.
Interestingly enough, I have in over 30 years I have not found another researcher studying this line. I will glady share information with anyone who is interested