Here are a few census to see.
See comments below each census.
This 1850 census shows George Wilfong (The
father of James McClure Wilfong) and his family.
Living next door was James McClure Wilfong and his wife Elizabeth.
This is 1860 and George is living here with his family, but James has moved away.
There is two Sarahs here. One is 12 years old and the other one appears to be a twin of Nancy.
This 1870 Census shows Miranda and Phoebe the
same age.
Were they twins?