Jeremy Lehmann
@jernealogy.bsky.social
Passionate about genealogy and weather
Pinned
Jeremy Lehmann
@jernealogy.bsky.social
· Sep 12
Introducing the Decoding Your Y-DNA Series!
YouTube video by Genealogy with Jeremy Lehmann
youtu.be
Exciting news! I have published the first two videos of my brand new #genealogy YouTube series called "Decoding Your Y-DNA".
Check out the videos here:
1. Introducing the Decoding Your Y-DNA Series: youtu.be/q8OFRGAlOQU
2. Comparing Y-DNA Testing to Other DNA Tests: youtu.be/r1vnImKT5Ic
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Check out the videos here:
1. Introducing the Decoding Your Y-DNA Series: youtu.be/q8OFRGAlOQU
2. Comparing Y-DNA Testing to Other DNA Tests: youtu.be/r1vnImKT5Ic
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Lots of ice on the Hudson River this morning!
February 3, 2026 at 12:19 PM
Lots of ice on the Hudson River this morning!
Hi #GenHour, I have to share an incredible story that took place in recent weeks.
My MIL was visiting my home and invited a DNA match in her 80s who lives close to my town to come over. We didn't know exactly how this match connected but she was a significant match, around the 2C or 3C level.
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My MIL was visiting my home and invited a DNA match in her 80s who lives close to my town to come over. We didn't know exactly how this match connected but she was a significant match, around the 2C or 3C level.
1/6
January 29, 2026 at 8:54 PM
Hi #GenHour, I have to share an incredible story that took place in recent weeks.
My MIL was visiting my home and invited a DNA match in her 80s who lives close to my town to come over. We didn't know exactly how this match connected but she was a significant match, around the 2C or 3C level.
1/6
My MIL was visiting my home and invited a DNA match in her 80s who lives close to my town to come over. We didn't know exactly how this match connected but she was a significant match, around the 2C or 3C level.
1/6
Hi #GenHour, it's been a little while since I last posted. How is your research going?
A few days ago I got a message from a cousin asking if I can help research her husband's family for a fee. It's the first time I've been asked to research for pay, and I think I'd like to take the job!
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A few days ago I got a message from a cousin asking if I can help research her husband's family for a fee. It's the first time I've been asked to research for pay, and I think I'd like to take the job!
1/3
January 29, 2026 at 8:37 PM
Hi #GenHour, it's been a little while since I last posted. How is your research going?
A few days ago I got a message from a cousin asking if I can help research her husband's family for a fee. It's the first time I've been asked to research for pay, and I think I'd like to take the job!
1/3
A few days ago I got a message from a cousin asking if I can help research her husband's family for a fee. It's the first time I've been asked to research for pay, and I think I'd like to take the job!
1/3
A frigid morning in New York City following the Sunday snowstorm. Ice is starting to build up on the eastern side of the Hudson River.
January 27, 2026 at 1:10 PM
A frigid morning in New York City following the Sunday snowstorm. Ice is starting to build up on the eastern side of the Hudson River.
A frigid sunrise. It's the coldest day of the winter so far with highs around 20°F.
January 20, 2026 at 2:29 PM
A frigid sunrise. It's the coldest day of the winter so far with highs around 20°F.
Hi #GenHour, I haven't had much time for genealogy research this week as I prepare for a business trip next week.
I'm happy that I finally had success with one of my Y-DNA YouTube videos. Views of the video have since moderated, but it did bring a lot of visibility to my channel.
I'm happy that I finally had success with one of my Y-DNA YouTube videos. Views of the video have since moderated, but it did bring a lot of visibility to my channel.
January 8, 2026 at 8:21 PM
Hi #GenHour, I haven't had much time for genealogy research this week as I prepare for a business trip next week.
I'm happy that I finally had success with one of my Y-DNA YouTube videos. Views of the video have since moderated, but it did bring a lot of visibility to my channel.
I'm happy that I finally had success with one of my Y-DNA YouTube videos. Views of the video have since moderated, but it did bring a lot of visibility to my channel.
Hi #GenHour, Happy New Year!
In the past week I've published two new YouTube videos:
1. The Future of Y-DNA Testing: youtu.be/Vgea7IPT2F0
2. Top 5 Genetic Genealogy Stories of 2025: youtu.be/KcJdEezEzfI
The first video has taken off and now has over 2,500 views!
In the past week I've published two new YouTube videos:
1. The Future of Y-DNA Testing: youtu.be/Vgea7IPT2F0
2. Top 5 Genetic Genealogy Stories of 2025: youtu.be/KcJdEezEzfI
The first video has taken off and now has over 2,500 views!
Top 5 Genetic Genealogy Stories of 2025 | MitoTree, IGG, and The Rise of WGS
YouTube video by Genealogy with Jeremy Lehmann
youtu.be
January 1, 2026 at 8:18 PM
Hi #GenHour, Happy New Year!
In the past week I've published two new YouTube videos:
1. The Future of Y-DNA Testing: youtu.be/Vgea7IPT2F0
2. Top 5 Genetic Genealogy Stories of 2025: youtu.be/KcJdEezEzfI
The first video has taken off and now has over 2,500 views!
In the past week I've published two new YouTube videos:
1. The Future of Y-DNA Testing: youtu.be/Vgea7IPT2F0
2. Top 5 Genetic Genealogy Stories of 2025: youtu.be/KcJdEezEzfI
The first video has taken off and now has over 2,500 views!
Reposted by Jeremy Lehmann
Today is the 7th day this month where Fairbanks, AK, has dropped to -35F or lower. Only 1 December since 1982 had more days (12 in 2012). @alaskawx.bsky.social
December 21, 2025 at 12:55 AM
Today is the 7th day this month where Fairbanks, AK, has dropped to -35F or lower. Only 1 December since 1982 had more days (12 in 2012). @alaskawx.bsky.social
December 19, 2025 at 1:12 PM
Hi #GenHour, how has everyone's week been?
I am nearing the conclusion of my Y-DNA video series. The penultimate episode will be out tomorrow and it's about a topic that is near and dear to me: Y-DNA Targeted Testing.
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I am nearing the conclusion of my Y-DNA video series. The penultimate episode will be out tomorrow and it's about a topic that is near and dear to me: Y-DNA Targeted Testing.
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December 18, 2025 at 8:01 PM
Hi #GenHour, how has everyone's week been?
I am nearing the conclusion of my Y-DNA video series. The penultimate episode will be out tomorrow and it's about a topic that is near and dear to me: Y-DNA Targeted Testing.
1/4
I am nearing the conclusion of my Y-DNA video series. The penultimate episode will be out tomorrow and it's about a topic that is near and dear to me: Y-DNA Targeted Testing.
1/4
New York City sunrise this morning
December 17, 2025 at 12:32 PM
New York City sunrise this morning
Reposted by Jeremy Lehmann
These people are nuts. NCAR developed the GPS dropsonde, which revolutionized the understanding of TC structure, improved forecasts, and validated remote sensing platforms, as documented in over 400 peer-reviewed publications in the last 25 years. And that’s just one of NCAR’s countless advances.
Exclusive: The Trump administration is moving to dismantle the National Center for Atmospheric Research in Colorado, according to a senior White House official, taking aim at one of the world's leading climate research labs.
Trump moves to dismantle major US climate research center in Colorado
The Trump administration is breaking up the National Center for Atmospheric Research, taking aim at one of the world's leading climate research labs.
bit.ly
December 17, 2025 at 2:09 AM
These people are nuts. NCAR developed the GPS dropsonde, which revolutionized the understanding of TC structure, improved forecasts, and validated remote sensing platforms, as documented in over 400 peer-reviewed publications in the last 25 years. And that’s just one of NCAR’s countless advances.
My latest video in the "Decoding Your Y-DNA" series is now out! It's all about the FamilyTreeDNA Discover Tool.
Check it out here: youtu.be/-zhScYk-Zyk
#geneticgenealogy #YDNA
Check it out here: youtu.be/-zhScYk-Zyk
#geneticgenealogy #YDNA
FTDNA Discover Explained: A Complete Guide to Y-DNA Haplogroup Tools
YouTube video by Genealogy with Jeremy Lehmann
youtu.be
December 12, 2025 at 2:11 PM
My latest video in the "Decoding Your Y-DNA" series is now out! It's all about the FamilyTreeDNA Discover Tool.
Check it out here: youtu.be/-zhScYk-Zyk
#geneticgenealogy #YDNA
Check it out here: youtu.be/-zhScYk-Zyk
#geneticgenealogy #YDNA
Reposted by Jeremy Lehmann
Fascinating work by Lipson, Skorecki et al, finally fully resolving the Y lineages of Jewish priests (Cohanim) using whole-Y sequencing.
Main finding: 45% of Jewish Cohanim (from all Jewish diasporas) have the same Y lineage, with origin ~3000 years ago, around the time of formation of Judaism.
Main finding: 45% of Jewish Cohanim (from all Jewish diasporas) have the same Y lineage, with origin ~3000 years ago, around the time of formation of Judaism.
Revisiting the lineages of the Cohanim using data from next-generation sequencing https://www.biorxiv.org/content/10.64898/2025.12.08.692646v1
December 11, 2025 at 8:18 AM
Fascinating work by Lipson, Skorecki et al, finally fully resolving the Y lineages of Jewish priests (Cohanim) using whole-Y sequencing.
Main finding: 45% of Jewish Cohanim (from all Jewish diasporas) have the same Y lineage, with origin ~3000 years ago, around the time of formation of Judaism.
Main finding: 45% of Jewish Cohanim (from all Jewish diasporas) have the same Y lineage, with origin ~3000 years ago, around the time of formation of Judaism.
There have been some beautiful views of Manhattan the past couple days!
December 11, 2025 at 9:31 PM
There have been some beautiful views of Manhattan the past couple days!
Reposted by Jeremy Lehmann
Anyone notice that Ancestry has a year-end "wrapped" now too? Turns out I've looked at a couple records through the year (though I feel like this was a slow year for my Ancestry use) #Genealogy
December 11, 2025 at 6:45 PM
Anyone notice that Ancestry has a year-end "wrapped" now too? Turns out I've looked at a couple records through the year (though I feel like this was a slow year for my Ancestry use) #Genealogy
Hi #GenHour, I am excited about this pre-print of a remarkable Y-DNA paper about Cohanim lineages that came out this week. I am proud to know several of the authors.
This paper is a huge advancement from the earlier papers on the subject.
You can read it here: www.biorxiv.org/content/10.6...
This paper is a huge advancement from the earlier papers on the subject.
You can read it here: www.biorxiv.org/content/10.6...
Revisiting the lineages of the Cohanim using data from next-generation sequencing
Background: Early studies using a handful of Y-chromosome markers showed that many self-declared Jewish priests (Cohanim) share related haplotypes, but the limited resolution left open how many priest...
www.biorxiv.org
December 11, 2025 at 8:17 PM
Hi #GenHour, I am excited about this pre-print of a remarkable Y-DNA paper about Cohanim lineages that came out this week. I am proud to know several of the authors.
This paper is a huge advancement from the earlier papers on the subject.
You can read it here: www.biorxiv.org/content/10.6...
This paper is a huge advancement from the earlier papers on the subject.
You can read it here: www.biorxiv.org/content/10.6...
Hi #GenHour, I'm sorry I haven't been able to post the past few weeks. I've been busy.
I have been working hard on completing my set of Y-DNA videos and will be posting my next one tomorrow. I have three more videos that I plan to publish this month, and they will be longer (15-30 mins each).
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I have been working hard on completing my set of Y-DNA videos and will be posting my next one tomorrow. I have three more videos that I plan to publish this month, and they will be longer (15-30 mins each).
1/3
December 11, 2025 at 8:12 PM
Hi #GenHour, I'm sorry I haven't been able to post the past few weeks. I've been busy.
I have been working hard on completing my set of Y-DNA videos and will be posting my next one tomorrow. I have three more videos that I plan to publish this month, and they will be longer (15-30 mins each).
1/3
I have been working hard on completing my set of Y-DNA videos and will be posting my next one tomorrow. I have three more videos that I plan to publish this month, and they will be longer (15-30 mins each).
1/3
Reposted by Jeremy Lehmann
Our 'Giving Tuesday' Gift to YOU:
The New York State Death Index, 1880-2017
After YEARS of fighting with the state of New York, we just put it all online -- and there might even be some more data to come!
Read all about it in our latest newsletter issue:
mailchi.mp/reclaimthere...
The New York State Death Index, 1880-2017
After YEARS of fighting with the state of New York, we just put it all online -- and there might even be some more data to come!
Read all about it in our latest newsletter issue:
mailchi.mp/reclaimthere...
Reclaim The Records
We’re Reclaim The Records, a new not-for-profit activist group of genealogists, historians, researchers, and open government advocates. We identify important genealogical records sets that ought to be...
mailchi.mp
December 3, 2025 at 4:53 AM
Our 'Giving Tuesday' Gift to YOU:
The New York State Death Index, 1880-2017
After YEARS of fighting with the state of New York, we just put it all online -- and there might even be some more data to come!
Read all about it in our latest newsletter issue:
mailchi.mp/reclaimthere...
The New York State Death Index, 1880-2017
After YEARS of fighting with the state of New York, we just put it all online -- and there might even be some more data to come!
Read all about it in our latest newsletter issue:
mailchi.mp/reclaimthere...
I highly recommend people watch @helenpdrabble.bsky.social's video about her new book "Yet", a story about her father's resilience following a diagnosis of bovine tuberculosis as a child.
📖 Discover a Forgotten Chapter of History
'Yet' my father’s incredible story of resilience in the face of childhood trauma & disability caused by bovine tuberculosis. It’s a story of hope, love, & transformation.
🎥 Watch here: youtu.be/G2TGkACKgCA
#Resilience #DisabilityHistoryMonth #Memoir
'Yet' my father’s incredible story of resilience in the face of childhood trauma & disability caused by bovine tuberculosis. It’s a story of hope, love, & transformation.
🎥 Watch here: youtu.be/G2TGkACKgCA
#Resilience #DisabilityHistoryMonth #Memoir
November 25, 2025 at 12:51 PM
I highly recommend people watch @helenpdrabble.bsky.social's video about her new book "Yet", a story about her father's resilience following a diagnosis of bovine tuberculosis as a child.
I just posted my first YouTube Shorts video, summarizing some of the best Black Friday #genealogy deals that are live.
This took me some time to put together, but hopefully it'll be quicker in the future!
You can view the video here: youtube.com/shorts/NpHnv...
This took me some time to put together, but hopefully it'll be quicker in the future!
You can view the video here: youtube.com/shorts/NpHnv...
Genealogy Black Friday Deals are LIVE! #genealogy #blackfriday #dnatest
YouTube video by Genealogy with Jeremy Lehmann
youtube.com
November 21, 2025 at 6:41 PM
I just posted my first YouTube Shorts video, summarizing some of the best Black Friday #genealogy deals that are live.
This took me some time to put together, but hopefully it'll be quicker in the future!
You can view the video here: youtube.com/shorts/NpHnv...
This took me some time to put together, but hopefully it'll be quicker in the future!
You can view the video here: youtube.com/shorts/NpHnv...
Lovely view this afternoon
November 20, 2025 at 9:00 PM
Lovely view this afternoon
Hi #GenHour, it looks like a lot of the genealogy websites have gone live with their Black Friday deals.
Ancestry and MyHeritage kits are currently only $29. And there are some great deals on genealogy subscriptions on Ancestry and FindMyPast.
Will you be taking advantage of any deals?
Ancestry and MyHeritage kits are currently only $29. And there are some great deals on genealogy subscriptions on Ancestry and FindMyPast.
Will you be taking advantage of any deals?
November 20, 2025 at 8:42 PM
Hi #GenHour, it looks like a lot of the genealogy websites have gone live with their Black Friday deals.
Ancestry and MyHeritage kits are currently only $29. And there are some great deals on genealogy subscriptions on Ancestry and FindMyPast.
Will you be taking advantage of any deals?
Ancestry and MyHeritage kits are currently only $29. And there are some great deals on genealogy subscriptions on Ancestry and FindMyPast.
Will you be taking advantage of any deals?
Reposted by Jeremy Lehmann
If you are an Ancestry user, keep an eye on the Search menu options. Some users have Full Text Search, in time hopefully that will roll out to all. Could be very useful not just for #FamilyHistory but also for #OnePlaceStudies!
#Genealogy #AncestryHour #GenHour
#Genealogy #AncestryHour #GenHour
18 Nov 2025 Go look at your account and report back! #genealogy #ancestry
November 18, 2025 at 7:28 PM
If you are an Ancestry user, keep an eye on the Search menu options. Some users have Full Text Search, in time hopefully that will roll out to all. Could be very useful not just for #FamilyHistory but also for #OnePlaceStudies!
#Genealogy #AncestryHour #GenHour
#Genealogy #AncestryHour #GenHour
Hello #GenHour, I am just landing back in New York following a work trip on the west coast. I had a great time.
Unfortunately, I haven't had much time for #genealogy research this week.
Unfortunately, I haven't had much time for #genealogy research this week.
November 13, 2025 at 8:03 PM
Hello #GenHour, I am just landing back in New York following a work trip on the west coast. I had a great time.
Unfortunately, I haven't had much time for #genealogy research this week.
Unfortunately, I haven't had much time for #genealogy research this week.