thegenealogygirl


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My DNA Results – How do they compare to my tree? (Updated)

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Yesterday I shared my ethnicity percentages based on my tree.  They look a little something like this:

  • 62.5% – British Isles (English, Mixed British Isles, Scottish, Welsh)
  • 15.6% – Europe West (French Canadian, French)
  • 9.4% – Scandinavian
  • 6.3% – Some mixture of European Jewish & Italy, Greece
  • 6.3% – Iberian Peninsula (Spanish)

As you can see from my screenshot up there, I have some interesting differences between my tree and the DNA I inherited.  Here is a comparison of my tree ethnicities and my DNA ethnicities.

Ethnicity comparison - Sheet1

The first important note is that those trace ethnicities, 2% or lower, are often considered noise.  In my case, those bottom three surprise ethnicities are not backed up by documentation.  The first six however, are documented, even the 1% Iberian Peninsula.

The biggest surprises for me are these:

  • How little of the French and French Canadian DNA I inherited.
  • How much European Jewish DNA I inherited.
  • How much Italy, Greece DNA I inherited.

John Costello and his ancestors make up 12.5% of my tree.  And yet, I inherited 19% of the three regions he could have contributed – Iberian Peninsula, European Jewish, and Italy, Greece.

And here is where I need to beef up my learning, you see something I read recently caused me to misunderstand a very important point – you inherit 50% of your DNA from each parent, beyond that, it is a random mixture of all that came before them.  I had a handful of paragraphs with some interesting questions and insights into some of the nuances of my tree.  But those questions and insights were based on my misunderstanding, so I chopped them out.  😉  Thank you Deborah for some helpful pointers!  (See her comment below).

I have so much to learn about genetic genealogy.  I need to test my siblings and cousins so I can isolate the various pieces of my DNA and do some fancy-science-y-ultra-nerdy-but-oh-so-cool-DNA-genealogy like this.

While I am still learning, and not completely sure of what my next steps are, the thing I keep coming back to is… How can I be 10% European Jewish when I had no idea I had ANY European Jewish ancestry?  10%.  That’s a lot of percent.  Especially when I didn’t see it coming.

This DNA stuff is oh-so-fascinating.  Have you tested?  Did you find any surprises?

Happy Wednesday, I hope you make a fantastic genealogy discovery today – DNA or otherwise!


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John Costello’s DNA – Well, half of it.

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John Costello, my great-grandfather

 

Just last week I shared my amazing, once-in-a-lifetime find of 7 seconds of video footage of my great-grandfather John Costello.  I continue to delight in it and probably will for the rest of my life.

Seeing John has been so enlightening.  Especially when it is coupled with some recent DNA results.  The last few weeks have felt like “the big reveal” in a few key ways.

Here is what I have always known – John was born in Barcelona to a Spanish mother and an Italian father.  Pretty simple and straightforward.  John was Catholic and attended Mass regularly – usually twice each week his whole adult life.  His wife Mary, who was a Protestant, was baptized Catholic after his death so that she could be buried next to him in a Catholic cemetery.

John had two sons who each had two sons.  From those four grandsons, there are four great-grandsons.  That gave me a potential of ten Y-DNA candidates to test.  I chose my Uncle because that was easiest.  My Uncle took a Y-DNA test for me shortly after RootsTech.

The results surprised me.

A lot.

I was expecting my Uncle to match to a bunch of Italian men with Italian surnames, hopefully several men with the same surname, and hopefully at least one who had a tree and was willing to work with me.  I was hoping this test would help me chip away at the John Costello brick wall.

Well…

That is not what happened.

My Uncle matched to 149 men at the 37 markers level.  149 men who ALL have different surnames from each other and from my Uncle.  All different surnames.

Here is a small sampling of some of the surnames on the list:

  • Persson
  • Benowitz
  • Mudd
  • Plotkin
  • Kalmuk
  • Chiprin
  • Meriems
  • Rosenthal
  • Gladtke
  • Mechlowe

There are 139 others.

When I look at his Ancestral Origins list I am seeing this huge list of Eastern and Western European countries like – Poland, Lithuania, Romania, Latvia, Turkey, Hungary, Germany, and Austria.  Notably missing is Italy.  As I am scrolling through this list I keep seeing the same note over and over again – Ashkenazi, Ashkenazi, Ashkenazi.  About 90% of my Uncle’s matches are noted as Ashkenazi.  The rest are not noted with anything.

John Costello’s Italian father was Jewish.

John Costello, who was a devout Catholic, was the son of a man who was, at least on his direct male line, Jewish.  He descended from a male line of Jewish men.

John’s three children who survived infancy never knew that their father was Jewish.  They knew him as a Catholic Spaniard.  So here I am, almost exactly 51 years after his death, discovering a part of himself that he never chose to share.

For many years no one spoke of the fact that he had any Italian blood.  In fact, no one but his children and myself knew that he was half Italian.  His children learned that fact from him, I from research.  It wasn’t until the last few years when I started asking more questions that they were forthcoming with that fact.  Or I suppose it is possible that just my little branch of the family was unaware of his Italian heritage because of separation caused by divorce – and believed this was a new revelation.  Either way, John’s Italian ancestry was a quiet fact.

I wondered if part of the reason behind this was related to his Alien status – a status he held until his death – and the feelings towards Italians during WWII, the internment of Italians during WWII.  Surely, that was an uncomfortable time for him.  Now I wonder if there was more to it.

Now I am wondering how John felt during the war years – Italian and Jewish?

Now I am wondering what happened to his family members on his father’s side during the war years.  I bet he wondered too.  As far as anyone knows, he had no contact with his family after he left.  None of them were literate, or so the story goes.

But all of that leads me to another important question – did he even know any of his father’s family?  His Italian, Jewish father married his Catholic, Spanish mother and they lived in Spain.  Did John ever meet any of his father’s family members?

There are so many more questions now than there were before.

But suddenly I find myself understanding the lack of information just a little bit better.  Or why John may have chosen not to share information.  Jewish persecution is very real and it’s been going on for what feels like forever.  I suppose if you leave your homeland and everyone around you accepts that you are a Spaniard, that is a safe thing to be.

But that means that so much was lost.  So much knowledge and understanding of our family and our family’s roots.  Traditions and faith were left behind.

In fairness, it may well have been John’s father, or grandfather, or great-grandfather who did the leaving and chose not to share information.  I will never know.

Genetically speaking, 12.5% of me is John.  If his father was 100% Jewish, that would make me 6.25% Jewish – assuming the DNA that was passed down reflected the fractions of the tree, which of course is not how that actually plays out.  But for argument’s sake, let’s say that I am 6.25% Jewish.  That is 1/16.  When you look at a family tree – that is a large portion of me.  A portion that I had no inkling was Jewish.

That is a lot of myself that I did not understand.  That I did not know about.

I have so much to learn about this part of my tree.

So much.

Grandpa Costello – you have left me a puzzle that I will keep working on until I solve it.  Even if it takes my entire life.  Even if all I do is stare at the small pieces you left behind until they are emblazoned upon my brain.  Even if those pieces never fit into a bigger picture because so much of the puzzle has been lost to time.  Whatever your or your father’s reasons were for keeping this a secret, I have learned the truth of your ethnic origins.  I honor it, I treasure it, and I will not keep it a secret from our mutual posterity.

And now to commence the learning.

 

 

ps – Are you now ever-so-curious about my ethnicity estimates?  I certainly was after getting my Uncle’s results back.  Well, I have them.  I just got them last week.  I will share them soon.  Stay tuned!

 

 

 

Note:  Y-DNA is passed directly from father to son.  It mutates very infrequently and very slightly over time.  If you have a brick wall or tricky spot in your tree and you have a direct line male who is willing to test, the Y-DNA test is generally considered a pretty lucky and straightforward gift – unless you are Jewish or from one of a few other ethnic groups with their own unique challenges.  That doesn’t mean the test won’t help you, it just won’t be simple and straightforward like it is for many other groups of people.  If you have questions about the four different types of DNA tests and when you might use them, this is a great read.  If you don’t yet understand that those Ancestry commercials that encourage tossing the lederhosen for a kilt are not accurately representing the limits of ethnicity estimates, read this.