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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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).
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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).
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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.
Hi #GenHour, I spoke with my distant cousin in France on Sunday. It went really well! She is around my age and is really interested in her family history. I shared with her information about our family history, which stretches back 500 years. Our video call lasted nearly 2 1/2 hours!
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November 6, 2025 at 8:30 PM
Hi #GenHour, I spoke with my distant cousin in France on Sunday. It went really well! She is around my age and is really interested in her family history. I shared with her information about our family history, which stretches back 500 years. Our video call lasted nearly 2 1/2 hours!
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Beautiful views of New York City this morning following the passage of a cold front overnight
November 6, 2025 at 12:14 PM
Beautiful views of New York City this morning following the passage of a cold front overnight
Reposted by Jeremy Lehmann
#GenHour #Genealogy #GermanAmericans New find from full-text search on FamilySearch: The naturalization documents of my 3rd great-grandfather John Arnold, who settled in Buffalo, NY. U.S. citizenship was pretty easy to get in the 1850s, not like today.
October 30, 2025 at 7:19 PM
#GenHour #Genealogy #GermanAmericans New find from full-text search on FamilySearch: The naturalization documents of my 3rd great-grandfather John Arnold, who settled in Buffalo, NY. U.S. citizenship was pretty easy to get in the 1850s, not like today.
And I posted this an hour too early because I forgot that the UK already changed their clocks back! Oops, 😂
#GenHour
#GenHour
Hi #GenHour, I hope everyone has been having a good week! It's a stormy afternoon here in New York City. Perfect weather for settling in and doing some #genealogy research!
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October 30, 2025 at 7:12 PM
And I posted this an hour too early because I forgot that the UK already changed their clocks back! Oops, 😂
#GenHour
#GenHour
Hi #GenHour, I hope everyone has been having a good week! It's a stormy afternoon here in New York City. Perfect weather for settling in and doing some #genealogy research!
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October 30, 2025 at 6:55 PM
Hi #GenHour, I hope everyone has been having a good week! It's a stormy afternoon here in New York City. Perfect weather for settling in and doing some #genealogy research!
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Reposted by Jeremy Lehmann
Alrighty, ready to see something really cool? (and maybe a little nauseating)
The evolution of Hurricane Melissa's mesovortices at peak strength.
The evolution of Hurricane Melissa's mesovortices at peak strength.
October 29, 2025 at 8:10 PM
Alrighty, ready to see something really cool? (and maybe a little nauseating)
The evolution of Hurricane Melissa's mesovortices at peak strength.
The evolution of Hurricane Melissa's mesovortices at peak strength.
Reposted by Jeremy Lehmann
#Melissa's landfall intensity of 185 mph/892 mb ties it with the Florida Key's Labor Day Hurricane of 1935 as the record minimum pressure of any TC making landfall *anywhere* the NATL basin. I feel for the residents of #Jamaica 😞
Zoomed in G19 visible meso loop courtesy of @cyclonicwx.bsky.social
Zoomed in G19 visible meso loop courtesy of @cyclonicwx.bsky.social
October 28, 2025 at 5:14 PM
#Melissa's landfall intensity of 185 mph/892 mb ties it with the Florida Key's Labor Day Hurricane of 1935 as the record minimum pressure of any TC making landfall *anywhere* the NATL basin. I feel for the residents of #Jamaica 😞
Zoomed in G19 visible meso loop courtesy of @cyclonicwx.bsky.social
Zoomed in G19 visible meso loop courtesy of @cyclonicwx.bsky.social
Reposted by Jeremy Lehmann
Not since 1935 has anyone experienced a storm like Melissa. Melissa's record wouldn't have happened without climate change, which made the hurricane's winds about 10 mph stronger, according to a rapid attribution analysis by Climate Central. yaleclimateconnections.org/2025/10/cata...
Catastrophic Hurricane Melissa hits Jamaica as the strongest landfalling Atlantic hurricane on record » Yale Climate Connections
At landfall in western Jamaica, Melissa’s 185 mph winds and 892 mb pressure tied with the Labor Day Hurricane of 1935 in the Florida Keys as the strongest on record for the Atlantic.
yaleclimateconnections.org
October 28, 2025 at 6:53 PM
Not since 1935 has anyone experienced a storm like Melissa. Melissa's record wouldn't have happened without climate change, which made the hurricane's winds about 10 mph stronger, according to a rapid attribution analysis by Climate Central. yaleclimateconnections.org/2025/10/cata...
Reposted by Jeremy Lehmann
Hurricane Melissa this morning up until landfall.
Just incredible imagery of an historic storm.
Just incredible imagery of an historic storm.
October 28, 2025 at 6:11 PM
Hurricane Melissa this morning up until landfall.
Just incredible imagery of an historic storm.
Just incredible imagery of an historic storm.
Sunrise over New York City with Venus viewable too!
October 28, 2025 at 11:05 AM
Sunrise over New York City with Venus viewable too!
Reposted by Jeremy Lehmann
The monster eye at the center of a still strengthening Hurricane Melissa.
October 27, 2025 at 4:54 PM
The monster eye at the center of a still strengthening Hurricane Melissa.
I am nearing the end of my "Decoding Your Y-DNA" series. The series is designed to help genealogists, DNA enthusiasts, and anyone curious about their family history understand the power of Y-DNA testing.
You can view all 15 of the published videos here: www.youtube.com/playlist?lis...
You can view all 15 of the published videos here: www.youtube.com/playlist?lis...
Decoding Your Y-DNA - YouTube
This series is designed to help genealogists, DNA enthusiasts, and anyone curious about their family history understand the power of Y-DNA testing.
www.youtube.com
October 27, 2025 at 3:23 PM
I am nearing the end of my "Decoding Your Y-DNA" series. The series is designed to help genealogists, DNA enthusiasts, and anyone curious about their family history understand the power of Y-DNA testing.
You can view all 15 of the published videos here: www.youtube.com/playlist?lis...
You can view all 15 of the published videos here: www.youtube.com/playlist?lis...