The Case of the Missing 1870 Census

Calling all Genea-Musings Fans:

It’s Saturday Night again —

time for some more Genealogy Fun!!

Here is your assignment if you choose to play along (cue the Mission Impossible music, please!):

1. Which of your ancestors or relatives have you NOT found in the census records, and what have you done—or are you doing—to try to find that person? Can AI help?
2. Identify one or more of your ancestors that are inexplicably missing from one or more census collections. Why do you think they were not enumerated?

The Case of Washington Marion Crawford

Every genealogist seems to have at least one family that simply refuses to appear in a census record. For me, one of those families belongs to my second great-grandparents, Washington Marion Crawford and Mary (Foster) Crawford.

Washington and Mary were married in March 1860, so they should have been enumerated together in the 1860 census. A few years later, although he was living in Washington Township, Warren County, Indiana, Washington enlisted as a Sergeant in Company H, 2nd Regiment New York Cavalry. During the Civil War, he was captured and endured imprisonment at Andersonville before returning home in 1865.

His Civil War pension records place him in Washington Township in both 1866 and 1873, and by 1880 he, Mary, and their children are clearly enumerated there.

Yet I have never found the family in the 1870 census.

By 1870, the household should have included:

• Washington Marion Crawford
• Mary (Foster) Crawford
• Ida Kate Crawford
• Judson Foster Crawford
• Possibly daughter Carrie Crawford

So where did they go?

What I’ve Tried

Over the years I’ve searched for:

• Washington Crawford
• Marion Crawford
• W. M. Crawford
• Judson Crawford
• Various spellings and possible misreadings of the Crawford surname
• Searches using only first names, ages, and birthplaces

I’ve also considered whether the family may have crossed the nearby Indiana-Illinois state line or whether Washington, still recovering from his wartime experiences as a former prisoner of war, may have been temporarily away from home.

Since Mary’s father, Zebulon Foster, also lived in Warren County, another possibility is that Mary and the children were living with her parents or another Foster relative when the census was taken. If so, they may have been recorded under the Foster surname instead of Crawford.

Can AI Help?

This week’s challenge prompted me to ask ChatGPT for ideas.

Rather than simply suggesting additional surname spellings, it recommended approaching the problem as a FAN Club investigation:

• Examine every Foster household in Warren County.
• Search for Judson and Ida without requiring the Crawford surname.
• Compare the neighbors surrounding the family in the 1880 census with the same neighborhood in 1870.
• Use land records, tax records, and Washington’s Civil War pension file to reconstruct where the family lived between 1866 and 1873.
• Consider whether Washington and his family were enumerated separately or whether the surname was indexed so poorly that it has escaped modern searches.

None of these ideas guarantees success, but together they provide a much more systematic research plan than simply repeating the same online searches.

Why Were They Missed?

At this point, I don’t believe the family necessarily escaped enumeration. Instead, I think one of several possibilities is more likely:

• The Crawford surname was indexed incorrectly.
• Mary and the children were living with the Foster family and recorded under that surname.
• The family was temporarily living in another county or just across the Indiana-Illinois border.
• Washington and his family were enumerated in separate households.

The combination of evidence is puzzling. Washington is documented in Washington Township shortly after the Civil War and again a few years later, yet the family remains elusive in 1870.

One of the things I appreciate about using AI in genealogy isn’t that it magically finds missing ancestors. Instead, it suggests new ways to think about longstanding problems. Sometimes all it takes is one new research strategy to solve a mystery that has resisted years of traditional searching.

Perhaps this week’s Genealogy Fun challenge will inspire me to finally discover where Washington Marion Crawford and his family were hiding in 1870.

How about you? Which ancestor seems to have disappeared during census time, and what strategies have you used to try to find them?