2 of mine I was surprised was such a difference. They are a 2nd cousin once removed. They were brother and sister. I matched the male at 208 and his sister at only 66. I thought that was a huge difference.

Great video, I have a big interest in genetic DNA and I found this video very interesting. I have been researching for over 25 years and genealogy is my favourite pastime. I look forward to watching more from your channel 😊

Andy, thanks, this is an excellent presentation that clearly explains the cousin matches. You've illustrated the relationships perfectly.

Two of my 9th-great-grandparents were Robert Parke and Martha Chaplin. 63 of my DNA matches also trace their descendancy from them as MRCAs. Interestingly, Crista Cowan also descends from them, but we don't share DNA. Before I got hooked on genealogy, I knew all 4 of my grandparents as well as all 4 of my maternal great-grandparents.

"It depends!" Good presentation. Thanks.

This one is good to watch more than once.

Looking forward to this.

Thank you, Andy! I seem to have a line of 3Cs with whom I share no DNA. I'm glad to see this as a possibility! When I do find a match with someone from that line, if I dig hard enough, often there's another line that may explain the connection. Needless to say, it's a hazy (!) part of my family...further complication: I've neither senior relations nor siblings, 1C or 2C... so 3C matters! This is on my re-watch list!

Nice one, Andy. :-)

Now I understand the concept of "shared DNA" so much better, Thank you Andy! I'm trying to reconstruct my Genealogy tree without knowing any of my biological relatives, I'm starting to think this will prove to be a difficult task. By the way, do you have any advice for someone in my situation for finding close relatives? I don't have any historical records or Last Names and all my strongest DNA matches are in the range of 70-80 shared CMs. Thanks again for the video!

I have one DNA match that so far I found 11 connections with. I stopped looking at their tree in case I found some more.

I share 257 cM/16 segments with a 3rd cousin and 66 cM/6 segments with one of his daughters and 217 cM/12 segments with his other daughter. The 257 is outside the range of a 3rd cousin and the 217 is outside the range of a 3rd cousin once removed according to DNA Painter. Their ancestor, my great granduncle, moved to Oklahoma from South Carolina around 1900 and no contact since then to the best of my knowledge.

I am finding this informative. I would like to know that on our Blalock ( my 3rd and 4th g grandpa and grandma's ) I have more CM's than my older aunt and uncle show? I show a 3rd-5th cousin and my aunt and uncle show 4th-remote. Is it just the re-combination thing? If that's the case, should I too consider those various cousins more like 4th-remote then?

I have a match at 8% 558 cM , 12 segments: since the match is on both sides ancestry claims the match is a grand nephew or great grandnephew. Does this mean a grandchild of either my sibling or my aunts or uncles?

One thing I've started to do is find genealogy books or family bibles of surnames then make separate Ancestry trees for them. This helps me find descendants since on my father's paternal side, my closest cousins would be 3rd cousins or equivalent.

This was interesting. You and I connect and I have Barton connection as well through Jarvis Greene

That fantastic I share DNA with all my maternal 1st cousins, 1st cousins once removed, 2 cousins, and 1st cousins 2nd removed and 2nd cousins 1 removed. Also majority of 3rd cousins. I don’t have any paternal 1st cousins, I have 2 1st cousin 1 remove,unknown of other cousins on dad’s side. I have some 2 cousins 2 remove on my mum’s side. 4th and 5th and 6th cousins I don’t know?

In my family tree my great grandmother's parents were 2nd cousins once removed. My great great grandmother's grandmother was also a member of that surnames family and that grandmother's grandmother also had that same surname so there are 4 times in one line that the surname shows up.... many of my dna matches belong to this line where the surname repeats multiple times. The ancestors on this line came to America in the early 1700's. The surname is Sharp or Sharpe can you tell me how many Sharp matches I can expect to have? Some dna would be coming down from males and some from females with the same surname. There are also sets of brothers and sisters that married brothers and sisters of another surname whose children are more like siblings than cousins.

Lots of stuff I didn't know. Some I did like my mom and grandma have fairly significant cM matches that I don't have at all and vice versa. I only recently decided to delve into my Ancestry DNA matches more thoroughly primarily because of Thru Lines and some supposed ancestors that I have some skepticism about. But one particular project has been very significant because my given surname (back to my great-great grandfather) is not the same as the huge majority of my Y matches including Big Y. Those are almost 100% CHANDLER. BUT the documentation indicates that the mother of my great-great grandfather was of the family that is my given surname. In other words it is likely she gave him her maiden name as his surname. And when I see the ThruLines for matches to her probable parents, her probable paternal and maternal grandparents the huge numbers of those matches to me increases the probability that my theory is correct and for me to research those lines would be productive and not wasting time. That those people are my ancestors and kin and just as valid as any other of my families. And without delving further into my Ancestry DNA matches I would not have that certainty. I would still be on the fence about it. Which helps because I am the Administrator of my given surname's FTDNA DNA Project! lol Although we do have two very able and more productive (than me) Co-Administrators who have done a great job. They are both Y matches to my given surname.

how is it that Cinco shares more DNA with Ivy than Andy does,??

At third cousins 10% of your biological relatives don't match. At 4th cousins half of them don't. After that it drops rapidly, in most lines. However in my experience some lines handed down their DNA far more often than others, while others hand down little DNA and if you're lucky you find 6 or 10 matches. who are 4th cousins. Farther back than 3rd cousins it begins to take more work to find out how your related. Past about 1830 there begin to be dead ends in your own and others peoples' trees, beyond those who were adopted or have adoptees in their immediate family. Figuring out how you are related requires good trees for yourself and your matches. The DNA can't tell you much without them. Past 1800 you also begin to run into ancestors from places where good records weren't kept or aren't readily available. And I often have to trace other peoples' trees for them. Another problem is that if you descend from genetic bottlenecks, eg, places where small numbers of people immigrated and intermarried, like New England, or Quebec, or Irish Quakers, you may have to do many trees to figure out how a piece of DNA is related to you, because you need to whittle down the shared ancestors who don't appear in all the trees, AFTER you trace out the trees to include all the shared ancestors. Amazingly enough, this all seems to be exactly what this man is saying! I'm used to people in my genealogy forums spouting absolute nonsense. Wow, I wish it told us who he is! I am finding there may be special problems with ancestors who came from southwestern Germany. These people began to come to the U.S. after 1700. Most of my DNA matches connect around 1600. Already we have trouble. Sometimes records exist online for Germany and they're complete, more often not. And Switzerland, a lot of people from that area started out as Swiss or the families spent time there. I'm talking about a region called the northern Kraichgau in Baden-Wurttemburg, the strip of Rhineland Pfalz between the Rhine River and the forest line, the BAsel region of Switzerland and its central cities. Help me, Jesus. People moved around a region 30 to 50 miles in diameter like jumping beans, born 30 miles from where they married and a different child born in every town. And there appears to have been a ferocious amount of intermarrying, it makes New England genetic genealogy look like a piece of cake. To top it all off, small segments in Germany are more regional than genealogical, and they point to the entire region where people speak Allemanic dialects, which also shares a more recent migratory religious history not helped by economic problems during industrialization. Specifically the Swiss border appeared to be imaginary to people who lived within 200 miles of it. You know how in Heidi people are up and down the ENTIRE Rhine River, including the portion south of Lake Constanz, all the way to the middle Rhine and its tributaries, in search of work? That was normal life. In America small segment matches are more likely to be 4th and 5th cousins.

I have ancestry. My half brother wants me to find his fathers side of family. I have one person that is 1742 cm 25 per cent Dna. Can you tell me how she would be related

I do not match a half second cousin whereas my two full dna siblings match the half second cousin around the 150cM range…..this was on Ancestry…could it be the timber algorithm…looking at charts on dna painter, i think i saw a half second cousin can be as low as 10 cM

ok so my moms cousins are my 2nd cousin? and their kids are my 3rd cousins??? and what is a Removed?

Does this breakdown suggest that we can guess at potential half-relationships or double relationships for 3rd or 4th cousins, on a statistical basis? For example, if I find a large cluster of 4th cousins, more than I might expect to have matched, could this suggest may be worth investigating this group as potential half-third cousins or double (distant) cousins?

What will this look like when say the Smith brother and sister marry the Jones brother and sister? Instead of the cousins sharing only one set of grandparents, they share both. That's what my father's family is. The two families had ranches separated by the county road. A brother/sister sibling pair on each side of the road. I hope that makes sense because without fail people think there's somekind of "inbreeding" but it's not. Anyway, I appreciate all your information. Thank you.

Why are the relationships written from larger to smaller and overlap? 3c/2c2r 3c1r/2c3r

Interesting....I have cousins I match with (2C1R and 1C1R)...They are 3rd cousins to each other but they are not a dna match. My daughter is also his 3rd cousin (to my 2C1R) but they don't match, yet my son, sister and my niece do match him. All my other matches seem to be 4th cousins or further (I can't connect them yet), so I have no other comparisons.

What about a 1st cousin once removed? Is that considered under the 1st cousin relationship? Which would be a child of a grand uncle or grand aunt.

Question: I was having issues in comparing my DNA kit to others. There were apparent matches but they were not called. I ran my kit against my kit, and on the chromosome I questioned, they said I was low match to myself! Same kit. So, how does this happen and how I can trust any DNA matching?

I have a 2nd cousin once removed on my fathers maternal side, which I don't share DNA with. Which I find very bizarre. My sister matches him at 173 cM | 2% shared DNA & my dad 285 cM | 4% shared DNA

Sir what about 1500 years.We claim descent from sayyid naqavi tribe.So we claim to be descendants of the greatest holy prophet(pbuh).So is it necessary that we must match other sayyid naqavi claimants within 1500 years

I was wondering how you figured out the exact number of cousins you have as 1st, 2nd, 3rd, etc.

Most distant cousin match that I can find a common ancestor with is a half 6th cousin. Her 4th great grandfather is my 4th great grandfather half brother. Guest he'd be my half 4th great granduncle. Probably the worst uncle I have since he fought for the Confederate

Does anyone know if you can search via ethnicity in ged match? Like if I want to see all the people who I'm related to who have certain ethnicity e.g. Lebanese?

Great video. I would have liked one more column in your chart. Multiply the Probability times the number of people who tested. That would show how many people you might actually find via a match. Thanks

Will DNA companies share data. I am on “My Heritage” but my niece is on “Ancestry”

I have a second cousin who is connected by more DNA than my 1st cousins...how?

What is WATO?

Wow! 10th Cousin? You must have a humongous tree!

Maybe this doesn't apply to you (because you are very knowledgeable and an expert at genealogy), but there may be missing people from your family tree that you just don't know about, either because no one in a certain branch has tested and/or they just don't match to you (I'm talking about the more distant cousins here)? If they also haven't built a family tree (especially if they have tested and aren't a match) then they may exist but you just don't know about them to include them in your statistics. Also the further you to back in history when records might have been harder to come by the bigger chance there is of missing someone (although you'd think that with censuses being available, especially in the US this is less likely). I've found, especially where one census or more are missing then you can be unlucky and someone was born just after one census was taken and moved away from home before the next available record comes along (though if they were staying with family, say aunts/uncles/cousins in the vicinity maybe it's not too implausible to think you'd pick them up again). All in all this is a great explanation, but I think you aren't really explaining that these are averages and so it varies a lot, and with such a small sample size I'm not sure that apart from the %s for the close relatives that you're very unlikely not to match apart from noticing that the more distant the cousin the more likely you are not to match there is much to be said about these stats. What about the cousins that don't match either of you? I'm not sure the DNA sites, definitely not Ancestry at least, tell you that someone in your tree has tested but don't match you, I'd love to know this information as well as those that do. Surely this is possible, although maybe it would make people who don't have the knowledge from this video that they aren't related and so not add them to the tree (a non match doesn't necessarily mean you aren't related, just that you don't share enough DNA for a confirmed match to be specified, whereas a match of a certain number of cM does, to a certain extent). Couldn't there also be misreads during either the processing of analysing of the DNA? I'm sure this must happen occasionally.

Need to contact Andy about an in-person Talk to my group

I wish people would take dna tests if you provide the tests for them. I have one who wants me to pay HIM to take the test, how do I do that?

I have some distance cousin from Mali and France not sure how we are connected