The Patriot’s Son: How a Tombstone Changed an Ancestor’s Birth Year

Some genealogy discoveries happen in archives. Others happen in courthouses. And occasionally, they happen because a tombstone has weathered just enough for a hidden detail to become visible.

This is the story of how a ten-year search ended with a surprise that changed what I thought I knew about my fourth great-grandfather, Thomas Duer.

Last week, I shared my visit to the grave of my Revolutionary War patriot ancestor, John Duer, in Mahoning County, Ohio. While standing beside his restored monument, I reflected on the journey that brought him from colonial New Jersey to the Ohio frontier.

What I did not realize at the time was that another member of the family was about to provide an even more important clue.

Thomas Duer, John’s son, died in Trumbull County, Ohio, in 1829. Proving the relationship between father and son was not straightforward. In fact, it took me nearly ten years to assemble enough evidence to satisfy the standards required by the Daughters of the American Revolution.

The challenge was that Thomas predeceased his father.

When John Duer’s will was written, Thomas was already deceased and therefore not named as an heir. Neither were Thomas’s children. At first glance, that omission appears troubling. However, records suggest that John had already divided portions of his property with Thomas years earlier when the family settled in Ohio. Tax lists, census records, church associations, and witness statements repeatedly placed the two men together.

Eventually, documentary evidence, combined with DNA results, confirmed the relationship.

Yet one mystery remained. Where exactly was Thomas buried?

Years ago, I contacted a local historical society and was assured that his grave still existed in the old Pricetown Cemetery. The former society president told me she knew exactly where it was because she had once tripped over the fallen stone during a cemetery cleanup project.

She explained that volunteers later repositioned the marker but could not recall its original location.

The story always bothered me. If the stone had been moved, how could anyone know where Thomas was actually buried?

Then another unusual event occurred.

While attending a genealogy lecture in Florida several years later, I noted on the sign-in sheet that I was researching families from Trumbull County, Ohio. Before the lecture began, I was called to the registration desk where a complete stranger introduced himself.

He had grown up in Trumbull County and wanted to know which families I was researching.

When I mentioned the Duers, he offered to visit the cemetery on his next trip north and photograph the grave. True to his word, he later sent me a photograph and refused any compensation for his time and effort.

The image was invaluable or so I thought.

The directions he provided to the cemetery turned out to be completely wrong.

When my husband and I finally attempted to visit the site ourselves this summer, we found ourselves driving in circles through rural Ohio. Roads did not intersect where we expected them to. Landmarks were missing. Several times we questioned whether we were even looking in the correct place.

Eventually, we abandoned the directions and relied instead on the cemetery’s coordinates.

That decision finally brought us to the cemetery.

The moment I located Thomas’s stone, something immediately seemed odd.

It was not where I had been told it would be.

The marker stood upright in the middle of a row rather than at the end. Nearby were fragments of other broken stones. Another marker of similar size and construction lay face down nearby. Looking carefully at the evidence, I began to suspect that the stone had probably been repositioned close to where it originally fell rather than being moved to an entirely different location.

That was interesting but it was not the real surprise.

The real surprise came when I compared the old photograph with what I was seeing in person.

Time had changed the stone.

Years of weathering and soil erosion had exposed portions of the inscription that were not clearly visible before. Looking closely, I could now read details that had previously been hidden.

There it was.

“Died Jul 29th.”

And beneath that:

“Aged 51 years.”

I almost collapsed.

For years, online information had reported Thomas’s death month as November. Probate records confirmed only that he died during 1829. No reliable source had ever provided his exact age.

Suddenly, I had both.

The new information shifted his estimated birth year from approximately 1775 to about 1778 or 1779.

Three or four years may not sound significant.

Genealogists know better.

A change of that size can affect which records belong to an individual, alter assumptions about military eligibility, reshape migration timelines, and even redirect research into earlier generations.

The most astonishing part was that this information had been sitting there all along.

The tombstone had not changed.

The inscription had not changed.

Only our ability to see it had changed.

Genealogy often teaches patience. We learn to wait for records to become available, for DNA matches to appear, and for new collections to be digitized.

But sometimes patience works in another way.

Sometimes the evidence is already in front of us, waiting for conditions to reveal it.

As I stood in that small Ohio cemetery, I was reminded once again why visiting ancestral sites remains so important.

Photographs are invaluable.

Online memorials are helpful.

But nothing replaces standing where your ancestor rests and seeing the evidence for yourself.

Two hundred years after Thomas Duer’s death, he still had one more story to tell.

All I had to do was show up and look.

Can AI Establish Relationship from Indirect Sources Only?

Picture Courtesy of Chat GPT

Like last week, my answer is a strong maybe! I’ve been researching my John Duer, Patriot, and his relationship to his purported son, Thomas for YEARS! I have so much indirect evidence and one piece that does state Thomas was the son of John but it is in a collection made beginning in 1865 that doesn’t provide the source. Of course!

So, I turned to AI to get its take on the problem.

Before I tell you the result, I want to share with you how to take data and create an Excel table using AI. It’s so super simple and saves a lot of time. WARNING: Like with all new tech, you much check for accuracy. Don’t assume it is 100% correct. Even with the time taken for that, it will be a time saver in the long run.

  1. Create a prompt to “extract structured data from…” whatever you uploaded. From the class I took, it was suggested we add “prioritize fidelity to the information below; dry recitation, avoid editorialization. Prioritize sentence-by-sentence from beginning to end. Extract from the (uploaded item) this structured data… (list whatever info you want). Display your response in the form of a CSV file. The response should have the header row: (titles you want – could be) “Person’s Names”, “Relationships Noted”, “Evidence of the Relationship” (or whatever you deem important). Enclose all cells or fields in quotation marks, omit, ignore, and avoid commas and other punctuation in the original text in your response in an attempt to keep the CSV error-free. Display your response in a code window for easy copy-and-paste.
  2. Upload your item as a .pdf file.
  3. A black box will display with the text in white letters. You can ctr c and ctr v into Notepad (you can find notepad by typing Notepad or Text in your computer search bar). Or, you can click on the upper right screen on ChatGPT and share, then copy code.
  4. Open the file in Excel and clean it up, if necessary.
  5. Then I opened a new ChatGPT message and gave the following prompt: Today you and I are an expert genealogist and writer. Your goal is to generate true and accurate reports. Find below the contents of a CSV file created from my research on the relationship of John and Thomas Duer. Transform the structured data into a narrative report; dry recitation, no editorialization, please.
  6. This is what I received:

John Duer was born on January 19, 1748, in Cranbury, Middlesex, New Jersey. Various sources, including family data collections and genealogical websites, document this event. The death of John’s mother, Mary Ann Hollingshead Duer, occurred in 1751 in Newton, Sussex, New Jersey, although specific source documentation is absent beyond public family trees.

In 1773, John married Susannah Miller in Sussex, New Jersey. Their marriage is recorded in the Family Data Collection and referenced in genealogical records from Youngstown and Mahoning County, Ohio. The couple had several children, the first of which was Esther Duer Hopkins, born in Monmouth, New Jersey, in 1774. However, there is a discrepancy in her birth location, as other sources suggest Sussex County, New Jersey, as her birthplace.

John’s military service is confused with that of a cousin who served in the Pennsylvania militia. Despite this error, records from Ohio acknowledge John Duer’s service, including listings in the official roster of American Revolution soldiers buried in Ohio.

Thomas Duer, John’s son, was born in 1775 in Sussex, New Jersey, with multiple sources confirming this, though his gravestone lacks specific dates. Jonathan Duer followed on November 11, 1777, also in Sussex, with his life documented through family data collections and census records.

Joseph Duer’s birth in 1779 is only supported by public family trees, lacking concrete source documentation. In 1780, Mary Duer Hazen, another of John’s daughters, was born in Sussex. Her lineage is established through the DAR lineage book and a family history published in 1947.

John Duer was a church member at the First Baptist Church of Wantage, Sussex, New Jersey, in 1783, with historical records from the Sussex County Historical Society likely supporting this fact. His military service is further documented in DAR and New Jersey Revolutionary War records, as well as in family genealogical files.

In the following years, John resided in Newton, Sussex, New Jersey, where he is listed as a vestryman in a history of Christ Church, and in Hanover Township, Morris County, New Jersey, as indicated by tax records. He also engaged in land transactions, including purchasing land that would later become part of West Virginia, and in 1797, he was a resident of Mansfield Township, Sussex, New Jersey, acting as a bondsman.

John’s life from 1798 to 1829 included various land dealings, military service records, family events such as the deaths of his sister Anna Duer Hull and his son Thomas Duer, and his own death on April 3, 1831, in Jackson Township, Trumbull, Ohio. His will was probated in March 1832, and his estate included guardianship arrangements for his grandchildren.

The narrative concludes with references to Thomas Duer’s estate papers, tax records, and land transactions that involved John Duer and his son Thomas. The document also notes a DNA connection to the family through Elizabeth Suriner and references to historical maps and newspaper articles related to the Duer family in Hubbard, Trumbull, Ohio.

Interesting, huh?! Nowhere in the csv data did it say that Thomas was John’s son. My headings were Date, Event, Place, Source, Name. Would this be accepted by a lineage society? Definitely not but it was an unbiased analysis of the indirect evidence. I did provide in the prompt to look for a relationship of John and Thomas Duer but did not state it was father-son.

I’d love to hear what you find in using AI to establish relationship.

Remembering the Forgotten Ones – A New Project

The Daughters of Union Veterans of the Civil War (DUVCW) have embarked on a new project, The Forgotten Soldiers and Sailors.  This legacy organization will be accepting documentation through the end of 2021 about those that left NO DESCENDANTS due to their death in battle or from injury/disease due to their war service for the Union.  

This project is dear to my heart because I try to honor my ancestors by selecting a different individual for each lineage society that I join.  I’m sure you have in your tree many people that died childless and had you not recorded them, would have been forgotten.  I see this endeavor as a way to remember true patriots who would not likely have their stories told.

When I first learned of the project I looked through my tree, which combines both my husband and my sides, to list all those that would qualify.  I identified 15 people.

I then looked at the records that I had already found to see if any met the criteria.  For example, I have an Adam Kuhn who died during Reconstruction purportedly from wounds sustained in battle, however, he would not qualify as he left 5 surviving children. Since the descendants could join DUVCW based on Adam’s wartime service he would not be eligible for this project. If his children had died childless then Adam would meet qualify to be listed in this project.  

I never took the time to deeply research the children of my several time great grandparents or thought much about the impact their deaths had on the family until I was heavily investigating my John Duer line in the past few months. That family lost a son to the Civil War – Prosser.  That was the first form I submitted.  

Next, I went up a generation and looked at the siblings of  John and his first wife, Jane, to see if those siblings had also lost a child due to involvement in the Civil War.  Sadly, I identified another Duer who qualified, Isaac.  Isaac’s story was interesting as his father, Mark, likely whom one of John’s son was named after, left home when Isaac was 6 to serve in the Mexican American War where he was killed in service in Onischalala, Mexico in 1848.  In researching Isaac, I learned that his widowed mother, Jane Skelly Duer, fell upon hard times when Isaac went off to war and had to rely on community charity from her Holmes County, Ohio neighbors to survive.  

Another Mark Duer, son of John’s brother, Thomas, had been killed in battle, too.  Thomas, like his brother, Mark, served in the Mexican American War but returned to settle in Missouri where he was discharged.  Father Thomas and son Mark signed up together to serve in the Civil War.  Neither survived the war.  My heart goes out to Frances Bonhanan Duer, wife and mother of those killed as her second son, Thomas decided to enlist after his brother’s death.  He was not killed and returned home after the war ended.

I then looked for other individuals in a different line, the Landfairs.  I quickly found Davidson who died while serving in Hampton, Virginia.  Davidson was the first cousin of Jacob Wilson Parrot, the first Congressional Medal of Honor recipient awarded for his bravery and I would add, audacious behavior, during those difficult times.  Remember that old movie, The Great Train Robbery?  That was about Jacob.  

I have 11 more individuals who served for the Union I will be submitting documentation for so that they may be remembered. These lives, cut short too young, should not be forgotten.  If you are not a member of DUVCW but would like to submit a Union soldier or sailor to be remembered, please email me at genealogyatheart@gmail.com and I will be happy to help you.