Tabitha is now identified as born between 1765 to 1770, probably closer to 1765. But how about those unknown children in the census -- can we use this analysis tool to identify them by name? Yes!

While Henry and Tabitha did not live until the 1850 census, most of their children did. And that census will give the names and ages of those who survived until 1850. We can then work backwards from known birth years to identify these unknown children using Henry's will.

We know from Henry's will that he named sixteen children by his two wives. It appears that he named them in order, oldest to youngest.

The five young children in the 1810 census would be 40 to 65 in 1850, and likely to be alive in the 1850 census.

Snippet from analysis of Tabitha's 1810-1820 census data.

The unknown children are temporarily named M1, M2, F1, etc.

Sons Joel and Stephen named last in Henry's will.

F1 is Mathilda,
F2 is Frances, and
F3 is Nancy.

Frances and Joel have left home by 1820. Nancy is still unmarried at 26 plus years old.

"16thly I give to my son Joel ... "

"17thly I give to my son Stephen ..."

They are likely to be the two youngest sons in the 1810 census.

Stephen is most likely the son "M1" above, born between 1801 and 1840. He is still living at home with Tabitha in 1820.

Joel is most likely "M2", born between 1794 and 1800; he has left home by 1820, when he would be 20 to 26 years old.

Similarly the three youngest daughters names can be extracted from the will, giving the following picture:

A search for Joel and Stephen Haynes in the follow-on census records finds two men who fit the 1810 data perfectly. Both men were born in Virginia; Joel in 1798; Stephen in 1803. 

• Joel is in the Missouri census from 1830 to 1850;
  The search for Joel Haynes

• Stephen is in the Alabama census in 1840 and 1850; The search for Stephen Haynes

Notice how each of their worksheets shows the fit of each son with the 1810 thru 1850 census.

Tracking the rest of the children through Henry's will, later census data, and their marriage data, etc.  gives the full picture of the family of Henry and Tabitha Haynes. See Family Vital Data

That figure shows the best estimate of the dates of birth, marriage and death for all sixteen children. (The daughters were tracked by using marriage records to find and track their husband's census data.) Plotting data in the form of this vitals chart  also allows to help identify which of Henry's two wives was the mother of each child.