DNA Matches: What You Can Do with All Your Genetic 4th Cousins

(Update 2020) When genealogists take an ancestry DNA test, they are looking for more than just their ethnicity results. They are also very interested in receiving information on other people who have tested who closely genetically match them. They want to know who the closest matches are, and if those matches have family tree information that they can share. 

However, with all the people testing these days, (some being genealogists and some not) the volume of matches can become overwhelming very quickly. 

Are you one of those people who have way too many genetic “4th cousins or closer” among your DNA matches? Have you ever wondered “What do I do with all these matches?!” If so, keep reading. We’re going to explore some of your options, and most importantly, how to determine how genetically close your cousins really are. 

what to do with your 4th cousins DNA genetic genealogy

Doing the DNA Math on Your Cousins

Math can provide us with a degree of certainty in genetic genealogy. Each of us has two biological parents. We have four biological grandparents, and eight great-grandparents.
too many 4th cousins DNA matches

However, the farther back we go the less we can rely on math.

For example, on paper you should have sixty-four 3rd great grandparents. However, many of us find that the same person occupies more than one slot on our pedigree chart. While this significantly decreases the workload for traditional genealogy, it adversely impacts your genetic genealogy. Especially when it comes to that long long list of 4th cousins you have in your match list at any of the three major DNA testing companies.

Depending on how intermarried your lines are, you may be seeing individuals on your match list that genetically look like your fourth cousins, but they are genealogically your sixth cousins – EIGHT TIMES!  So how can you tell the difference?

There are two parts to that answer: one you can control, and the other you can’t.

Distinguishing DNA Matches with Genetic Tools

While your fourth cousins and your eight-time-sixth cousins may look similar genetically, there are often small clues in the genetics that can help you tell the difference. This distinction can sometimes be detected by a testing company who, through research and validation, has been able to fine-tune their algorithms to detect these subtle differences.

DNA cousins

Your Genetic 4th Cousins

You can participate in this double checking process by using some of the genetic tools that are available to you at Family Tree DNA, or at Gedmatch.com. But since you may not be an aspiring geneticist, let’s focus on the genealogical work you can do to determine if a match is truly a fourth cousin.

Use Google Earth to Plot Your DNA Matches

A fourth cousin designation just means that you and your match are separated by between six and twelve degrees (people). So that might be five back on your chart to your common ancestor, and five down to your match, which would make you true fourth cousins. It could also be some other permutation of that.

For our example, let’s assume true fourth cousins. That means that the two of you share one of thirty-two 3rd great grandparents (16 couples). In order to find out which set, you have two genealogical identifiers: surname and location.

Therefore, the first thing you should do is make a list of the surnames and locations of those thirty-two 3X great grandparents.

Now, most of us do not know all 16 of those couples, so you are going to have some holes. Feel free to fill in those holes with surnames on subsequent generations that will carry through to this fifth generation.

A great tool to plot your own list of ancestors geographically is the free downloadable Google Earth software

Check to see if you have the latest version of Google Earth downloaded to your desktop or laptop computer. On your desktop, look for a grey and white globe. If you see a blue and white globe, you have the older original free version of Google Earth. However, a few years ago, Google made their Google Earth Pro version free to everyone, and it is now the standard. 

If you do have Google Earth Pro (the grey globe software) then you’re ready to go.

Google Earth on your computer desktop


The grey Google Earth globe on the desktop.

If you don’t have it, then you will need to download it. 

How to Download the Free Google Earth Software:

  1. Go to http://www.google.com/earth/download/gep/agree.html
  2. Click the blue download button
  3. Read the Terms and Conditions
  4. If you agree to them, click the Agree and Download button
  5. Follow the installation guide
  6. When complete click Run Google Earth

Now that you have Google Earth, you can begin by creating a folder in the Places panel in Google Earth devoted to your 16 couples. Here’s how:

1. In the Places panel, right-click on MyPlaces and select Add > Folder:

how to create a folder in Google Earth Layers panel for DNA

Right-click on MyPlaces > Add > Folder

2. Name the folder and then click OK:

Creating a folder in Google Earth

Creating a folder in Google Earth

3. Now you will see your new DNA folder for your 16 couples in the Places panel. If you don’t see it, look toward the bottom of the list. You can move the folder to any location within the list by dragging and dropping it. 

Create a folder in Google Earth for DNA 32 couples

Create a folder in Google Earth for DNA 16 couples

Once you have your DNA folder created fro your 16 couples, you can then easily plot your surnames and locations. 

How to Plot Your Surnames and Locations in Google Earth:

1. Click your new DNA folder to select it. This will ensure that the placemark you are about to create will be stored in that folder. 

2. In the search box (upper left corner of the Google Earth software) type in the first location and click Search. Google Earth will fly to that location on the map.

Type the locaton in the Search box and click Search.

Type the locaton in the Search box and click Search.

3. In the toolbar along the top of the screen, click the placemark button to place a pushpin in that location:

Click the Placemark button in the Google Earth toolbar

Click the Placemark button in the Google Earth toolbar.

4. In the Placemark dialogue box, enter a title for hte pushpin placemark. Click the OK button to close the box and set your placemark.

5. Repeat the process for all the locations. 

Then evaluate the fifth generation of your fourth cousin matches for genealogical information that lines up with any of the items on your list.

You can also plot the surnames and locations of your matches in Google Earth. This is where Google Earth really comes in handy. The free software makes it very easy to see when your ancestral home may be bordering the locations of your matches. Those with whom you find a similarity become your best matches, and your best chance of determining your connection. Those without an obvious connection cycle to the bottom of your pile for a genetic evaluation. You can perform these same kinds of searches for your second and third cousins as well.

As you begin to become more familiar with the fifth generations of your matches, you may also start to see patterns of surnames or locations emerge among your matches. These then become the surnames and locations that might be able to fill the missing spaces in your pedigree chart.

More Genetic Genealogy and Google Earth Gems

If you are new to using Google Earth, I have several suggested resources for you by Lisa Louise Cooke:

Premium podcast 131

Learn more in Premium episode 131.

Here’s a video of the authors discussing three common DNA misconceptions:

 

 

Authors: Diahan Southard and Lisa Louise Cooke

FTM’s 101 Best Genealogy Websites: Here’s the Latest List!

Family Tree Magazine has released its newest list of 101 best genealogy websites–and we’re on the list! This year’s list is all about the best free genealogy websites–for US.research, military records, tech tools and more. 

Each year, Family Tree Magazine publishes its list of the 101 best genealogy websites. They love sharing their favorite sites with readers and honoring those who create these sites. We just heard that the new list is out–and we’re on it!

This year, the list focuses on websites that provide genealogy information and records for free. Categories include:

  • Big genealogy websites
  • Online vital and grave records
  • Military genealogy websites
  • Genealogy immigration websites
  • Genealogy map websites
  • Old newspaper genealogy websites
  • Genealogy library websites
  • US genealogy websites
  • Websites for sharing your genealogy
  • Online genealogy technology tools
  • UK & Irish genealogy websites
  • International genealogy websites
  • Genealogy social history websites
  • Online genealogy tips and help

Genealogy Gems appears in that final category. Here’s what Family Tree Magazine has to say about us:

More than 200 free podcast episodes with research experts make Lisa Louise Cooke’s “genealogy radio” website a must, along with how-to videos, a genealogy book club and a helpful news blog.

We share this category with only five other honorees, including RootsTech and YouTube! Click here for the full list of 101 Best Websites.

Best of New and Updated Genealogy Records Collections

This week the entire Genealogy Gems team is heading to Dallas to present a two day event at the Dallas Public Library. With Lisa, Sunny and Diahan so busy, I’ve decided to take the reins this week and bring you a roundup of my favorite genealogy records of 2017! This compilation includes collections that are new, updated, and just plain fun! I’ve really enjoyed digging back into these and finding new genealogy gems. And I’d love to know: what exciting and helpful collections have you been using this year? Please share in the comments below!

The Catholic Heritage Collection at Findmypast

In February of 2017, Findmypast announced the new Catholic Heritage Archive. Roman Catholic Church genealogical records go back centuries and are meticulously preserved, but difficult to obtain for the general public. Findmypast partnered with British and American Archdioceses to bring up to 100 million Catholic Church records online. Millions are available to search online now, and more will continue to be added.

English Roman Catholic Records
Irish Roman Catholic Records
Scottish Roman Catholic Records
United States & Canada Roman Catholic Records

 

Sanborn Fire Insurance Maps at the Library of Congress

The Library of Congress has put online nearly 25,000 additional Sanborn Fire Insurance Maps–and more are coming! Over the next three years, more will be added monthly until all 50 states are covered from the 1880s through the 1960s. This is definitely a collection to keep an eye on!

Sanborn maps show detailed information about neighborhoods, buildings, roads and more for thousands of towns in the U.S. and beyond. A sizable collection of pre-1900 Sanborn maps are already online at the Library of Congress (use the above link). Watch the short video below to learn more about them. The full length class is available to Genealogy Gems Premium Members.

https://youtu.be/Rhv5vtWwONM

Click here to learn more about how to use this outstanding online collection.

 

WWI Centennial – Free Records at FamilySearch

2017 marked the 100th anniversary of the United States entering World War I, and there was a wealth of records and historical resources featured online. I’m highlighting the collection of millions of WWI records available for free at FamilySearch.org, because who doesn’t love free?!

United States World War I Draft Registration Cards, 1917–1918
California, San Francisco, World War I Enemy Alien Registration Affidavits, 1918
Louisiana World War I Service Records, 1917–1920
Maine, World War I Draft Registration Index, 1917–1919
North Carolina, World War I Service Cards, 1917–1919
Texas, World War I Records, 1917–1920
United States Index to Naturalizations of World War I Soldiers, 1918
United States, YMCA World War I Service Cards, 1917–1919

 

Italian Civil Records at FamilySearch

Back in March, FamilySearch added to their unique collection of Italian genealogy records. Five specific locales in Italy have Civil Registration records online. Civil registrations include such things as births, marriages, and deaths. They can also include marriage banns and ten-year indexes. Of course, availability of records will depend on the time period and the location. In some cases, this collection goes back as far as the 15th century!

Italy, Viterbo, Civil Registration (State Archive), 1870-1943
Italy, Mantova, Civil Registration (State Archive), 1496-1906
Italy, Grosseto, Civil Registration (State Archive), 1851-1907
Italy, Rieti, Civil Registration (State Archive), 1840-1945
Italy, Enna, Civil Registration (State Archive), 1866-1944

Learn more about Italian genealogy: In the video below, Lisa sits down with Mary Tedesco of Genealogy Roadshow (on PBS in the US) and talks about doing the TV show, and her tips for conducting Italian genealogy research. This is just one of the many genealogy videos on our Genealogy Gems YouTube Channel.

https://youtu.be/6E8BuprPqsw

 

New England Vital Records

Millions of New England vital records became available online in May of this year, dating back as far as the 17th century. Collections are highlighted below:

Connecticut. More than 755,000 indexed names added to FamilySearch.org’s free collection, Connecticut Marriages, 1640-1939.

Maine. FamilySearch.org added nearly a half million indexed names to its collection of Maine Vital Records, 1670-1921.

Massachusetts: New images have been added to the New England Historic Genealogical Society’s collection for the Roman Catholic Archdiocese of Boston, 1789-1900: Immaculate Conception (Salem)St. Mary (Salem), and Sacred Heart (Roslindale).

Rhode Island. FamilySearch added over a half million new indexed names and 30,000 digital images to its free collection, Rhode Island – Vital records. These are described as “Certificates and registers of births, 1846-1898, 1901-1903, marriages 1901-1903 and deaths, 1901-1953 acquired from the State Archives in Providence.”

 

British Emigration Records at Findmypast

We often talk about immigration, with an I, but have you researched your ancestors emigration records with an E? The 1600s saw a boom in British emigration, and Findmypast has curated several fascinating collections:

Early emigration from Britain 1636-1815 is a collection from Findmypast containing over 21,000 records that allow you to learn if your ancestors left Britain for North America or the West Indies. The collection includes 10 pieces from The National Archives including colonial papers, general entry books, passenger registers, and weekly immigration returns.
Britain, early emigration to Barbados
 centers on your British ancestors who left for a settlement in Barbados between 1678 and 1715. With over 20,000 assorted documents, this collection includes baptisms, burials, censuses, landowner lists, and more.
Britain, Royal African Company, 1694-1743 is a collection of over 55,000 records to uncover the details of those on board the Royal African Company’s ships to and from Africa as well as the names of those who lived and died at company forts. These Findmypast records came from The National Archives T 70 series, Company of Royal Adventurers of England Trading with Africa and Successors.

Click here to learn more about researching and working with emigration records.

 

…and just for fun…

Sydney, Australia – 19th Century Complaint Letters

When I saw this collection, I was totally tickled! I would love to find an ancestor’s complaint letter, as a window into their daily life and surrounding neighbors.

Over 56,000 letters written by residents to the City of Sydney in the latter part of the 1800s have been digitized and added to the City of Sydney Archive online. A city historian quoted at the Daily Telegraph.com said people’s complaints “range from the mundane to the bizarre,” such as “foul smells, night time noise, stray farm animals and smoke billowing from homes and blacksmiths’ forges.” This same online city archive also hosts a collection of historical photographs, a full run of Sands directories, postal directories, and other resources for researching your house history. Find this collection by clicking Archives Investigator and then “Letters Received by Council, 1843-1899.”

 

If you want to see what other records we’ve covered, there’s any easy way to narrow down to your specific ancestors! Visit our home page at www.GenealogyGems.com, and select a category from the drop-down menu on the left:

You can choose categories like Canadian, German, Irish, African-American, Australian, and more. You’ll receive of list of every article where that topic was featured or included. This is a super easy way to find new records collections for any area you’re currently researching. You can also choose other categories like newspapers, technology, organization, etc. for helpful how-tos, research strategies, and updates. And you can always use the search bar in the top right corner of our website if you don’t see your topic listed.

There’s a treasure trove of genealogy gems on our website!

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