These profiles appear to be the same person (unless the son married his mother)
Nancy Agnes Walkup 1690-1740 married Joseph Wauchope 1666-1720
Nancy Agnes Walkup 1690-1740 married Samuel Vachub Walkup, Jr. 1698-1780 (son of the first couple)
FYIEugene Thomas Erica Howton Частный профиль
It looks like this one Nancy Agnes Walkup (wife of Joseph) was originally Rebecca Graham 1676-1740
This website might add some information - http://www.wauchopes.com/Samuel_and_Nancy_Wauchope.htm