data point 1

1850 United States Federal Census about Thos B Pierpoint
Name: Thos B Pierpoint
Age: 10
Birth Year: abt 1840
Birthplace: Maryland
Home in 1850: District 1, Baltimore, Maryland
Gender: Male
Family Number: 2003
Household Members:
Name Age
Thos Pierpoint 52
Abaline Pierpoint 46
Chas H Pierpoint 19
Milkey E Pierpoint 16
Joana Pierpoint 13
Mary E Pierpoint 10
Sarah J Pierpoint 7
James K R Pierpoint 5
Thos B Pierpoint 10

data point 2

Name:
Thomas Barton Sargent Pierpoint
Father:
Charles Pierpoint
Mother:
Jane
Birth:
6 Jun 1838 in First Methodist Episcopal Church, Baltimore, Baltimore, Maryland
Baptism:
7 Oct 1838 in Baltimore, Maryland

this can not be charles vernon and mary jane pierpont, for they are just a few years old themselves. thomas b does not appear to be thomas and abeline's son in the census.