How do we know when we have compiled enough evidence to consitute genealogical proof of a familial connection? Read on to find out!
How do we know when we have compiled enough evidence to constitute proof? Is a birth certificate or an autosomal DNA test result sufficient to declare this person is the child of that person? Must we collect every record regarding an individual – the deeds, the tax lists, the newspaper clippings, the census reports – before we can declare a familial connection?
The Genealogy Proof Standard (GPS) directs us to perform reasonably exhaustive research, which requires that we identify and review all available records related to an individual. This is being as thorough and accurate as possible and is a goal toward which we should all aspire in our genealogical research.
But, let’s be honest: most of us do not want to spend weeks or months (or even years) documenting one person before moving on to the next individual. We don’t want to know every detail of grandpa’s life before we turn to grandma. We want to build a family tree which accurately provides us with the names of our ancestors so that we can identify our immigrant ancestor, or join a lineage society, or enjoy the satisfaction that comes from a balanced tree extending back a hundred years or more.
We want to be thorough and accurate, but we also want to make some progress. How do we balance the need for accuracy with the desire for results? How do we determine the necessary quality and quantity of evidence for our research? Below are some guidelines to demonstrate how we can go about compiling the necessary information to say with confidence “this person is my ancestor.”
1. One record/source is never enough.
Any one piece of data can say anything. A mother might lie on her child’s birth certificate for a number of reasons. A grieving spouse might not correctly recall the information for a husband or wife’s death certificate. There are typos and omissions and messy handwriting with which to contend. Even a lone DNA test is not sufficient evidence to prove a family connection.
We need multiple sources, and different kinds of sources, which corroborate the details of the others.
A single source is not enough. A marriage license does not guarantee that John and Griselda married. Photo courtesy https://newspapers.com.
A census report and autosomal DNA test results.
A deed and a will.
A birth certificate and an obituary.
Or, better still, a birth certificate, a census report, a deed, a will, an obituary, and autosomal DNA test results.
2. The more contemporary the source is to the person or event in question, the better.
Records of events made immediately after the event tend to be more accurate, and provide better details, than records created months or years later. As time passes, details become fuzzy, two events can be confused with each other, and our memories fade.
The passage of time between an event and the record of the event also allows for some revisionist history to creep in. A birth year is adjusted to make someone appear older or younger in order to avoid the draft, enlist in the military, mask a dramatic age difference between spouses, or conceal an out-of-wedlock birth. An obituary ignores the deceased’s first marriage because of some embarrassment associated with that marriage. A census report enumerates everyone in the household as natives of Stepney, London, when they really were born in Stepney, and Hackney, and Whitechapel, which explains why the baptismal records can’t be found in Stepney.
According to this obituary for Griselda, she was the widow of Willis Tenney, not John Wise. It appears Griselda and John did not marry after all. Photo courtesy https://newspapers.com.
This is particularly true when it comes to autosomal DNA testing. My autosomal DNA is more useful for identifying my ancestors than is my son’s because I am one generation closer to those ancestors. This is the reason we encourage people to test the oldest members of their family first: their DNA has the potential to be the most useful simply because they are from an earlier generation (or two).
3. It is okay to make appropriate assumptions, but be careful!
In genealogical research we must sometimes make assumptions. When research theories are based on logical reasoning, it is perfectly acceptable to make those appropriate suppositions.
Determining which assumptions are appropriate can be simple: the two-year-old child enumerated in the home of a 90-year-old woman in the 1850 census can safely be eliminated as a biological child of that woman; the man born in 1745 could not have been buried in 1739; the person with whom I share 3150 cM of DNA is my sibling.
The challenge is to avoid making what seems like an appropriate assumption but is really based on faulty reasoning or bias. For instance, we presume that every child listed in a household in the 1860 U.S. Census is son or daughter of the two adults listed first. However, the household could include step-children, cousins, or individuals not even related to the family who were erroneously assigned the same surname.
Other inappropriate assumptions include the notion that a baby was born within a week of his baptismal date; a woman’s reported surname on her marriage certificate is her maiden name; there is only one person in any village, town, or city with the name of your ancestor; someone who shares 2000 cM of DNA with you must be your grandparent, aunt or uncle, niece or nephew, half sibling, or grandchild (they could be a ¾ sibling, the child of one of your parents and the sibling of the other parent).
4. All of the data from the various sources must correlate, and there can be no unresolved contradictions.
When the birth certificate says Richard was born in 1914, the 1938 newspaper article about his wedding reports Richard was 24 years old and the 1942 World War II Draft Registration card notes Richard’s date of birth occurred in 1914, we can confidently declare Richard was born in 1914.
If the wedding article declared the groom was 23 years old the contradiction could be explained by the time of year in which the wedding occurred – before or after Richard’s birthday.
But if his birth certificate reported a 1914 birth, and the newspaper article noted Richard was 32 years old, while the World War II Draft Registration listed his year of birth as 1920, we have some important contradictions. It is most likely the records are for three different men with the same name.
By collecting additional evidence, we finally learn that Griselda and John Wise did marry, and after his death Griselda married Willis Tenney. If we had collected only one of these four records we would not have had the most accurate information regarding Griselda Paul. Photos courtesy https://familysearch.org.
It’s important to remember that once we have accomplished that initial goal of building out our tree a few generations or identifying our immigrant ancestor or determining if we are related to that historical person, we can – and should – go back and collect other sources related to that person, uncovering a more complete story of their lives in the process. As we can see from the four documents regarding Griselda Paul’s marriages, her story is much more than a simple list of birth, marriage, and death dates. As we identify, review, and analyze the other available sources, Griselda’s story will come alive with the facts and details we uncover.
*Kate was featured on the Genealogy Gems Podcast produced by Lisa Louise Cooke discussing genealogical proof. You can listen to the full episode and view show notes by clicking here.
If you need help evaluating evidence in your family history research, the team at Legacy Tree Genealogists is here to help! We’re experts at scouring every possible record source for clues to ensure our client’s genealogy is accurate and verifiable. Get started today by requesting your free quote.
Stuart Frost says
I just spent 3 days sorting out 2 Charles Gs. Conflicts with dates, spouses, children and siblings. To addconfusion, one of the spouses showed up with her first name as Juanita but other records used her nickname Nettie.
By comparing information from a combination of birth certifiactes, draft cards, marriage certificates, find-a-grave information, censuses, obits and local genealogy organizatuon resources I was able to build consistent profiles for the 2 different Charles’.
And found several very interesting life facts for both of them.
Amber - Legacy Tree Genealogists says
Excellent example of diligent research through multiple sources being the key to genealogical proof. Thanks for sharing!
Kim Daniel says
I have an ancestor Edmund. Living in the same area and born about the same time (1760) was another Edmund that was unrelated. At first I thought he might have been married twice but further research indicated both women were alive and having hid children. Then I found land grant and purchase documents that made it clear I had two different Edmunds. Based on death records and the land records I worked out which Edmund was my ancestor. DNA confirmed that I had the correct Edmund.
Amber - Legacy Tree Genealogists says
I get impatient sometimes with my LT pros’ slow pace, mostly unjustifiably – good article to slow my roll…
Beth Harrison says
Thanks for the comment, Diane. Glad it was helpful. Sometimes it is hard to be patient when doing research, but it’s always worth it!
Stuart Frost says
Here’s another wrinkle to this discussion: unwed mothers.
100 years ago, or more, children of unwed mothers may have been raised by other family members and would show up on the census records and possibly in obits & other publications.
By the 1940s unwed mothers “went away” and gave up babies thru adoption agencies. (I’m one of them.) These babies had their origional records sealed and the adoptive parents were given a new birth certificate.
Recently some states, including New York, have given adoptees access to their original birth certificates. Which may either confirm what the adoptee has already discovered or create a whole new perspective.
Beth Harrison says
That’s a good point, Stuart. Thank you for your comment!
Lillian L. Medina says
Thanks so much for this article. I wanted to complete my Family History Album in one year, but going through my family tree I realized I had the wrong ancestor on numerous occasions, and started my research again by obtaining more documents to confirm that I have the right ancestor. Doing a family tree is not easy, I don’t know how the genealogists do it, but I love it! This is what kept me sane during the pandemic. I also told myself “I need to find someone who can double check my work”. Thanks again!!
Stu Frost says
You may find that family genealogy can become a lifetime pursuit
Beth Harrison says
Hi Stu, Thank you for your comment. You are right – it can become a pursuit where more details are uncovered over time. We can always help people with their research, whether a big or small project. If a record exists we can find it!
John Blassingame says
Hi my name is john I been doing research on my ancestors my great grandmother I found records of her with 4 or 5 different birth dates I took a DNA test I went to shared matches with relatives and all the cousins link through her was under a different family last name her father first name on her death certificate was Fred Mitchell but marriage Certificate said Charles Mitchell as father mother Sadie Desylver I found no ancestor or DNA connections under those names so I add Frederick Cuffee as father and all my DNA matches fell in place as 3rd or 4th cousins as ancestry DNA predicted but I can’t find Frederick Cuffee as being her father on census also she has no Birth certificate I found a woman with the same first name as my great grandmother on one census in the same family group as my DNA Connection but she was born 1884 and my great grandmother was supposed to been born 1897-1901 her daughter my grandmother was born 1938 she would of been 53-54 years old also I found Sadie Desylver name was Sarah Mitchell and she worked for Dasilva $5 and $10 dollar store
Beth Harrison says
Hi John, it sounds like you have been doing some good research on your ancestors. If you ever feel like you’ve hit a brick wall, our expert researchers would be honored to help you through the process. Please contact our Client Solutions Specialists through the form on our Get in Touch page. They can point you in the right direction and provide a free estimate if research is needed.