Jeremy Lehmann @jernealogy.bsky.social · 03/09/2026Hi #GenHour, how has your week been? My exciting news is a cousin sent me a photo of my 3rd great-grandfather, Meyer Hollander. He was born in the 1840s in Gorlice in Galicia. I'd never seen a photo of him before! 0180
Jeremy Lehmann @jernealogy.bsky.social · 21/08/2026I am back with a new video for my Decoding Your Y-DNA series! Check it out here: youtu.be/BT9CIYUXAhg #GenHour #AncestryHour 1/3youtu.beY-DNA Comes to MyHeritageYouTube video by Genealogy with Jeremy Lehmann 100
Jeremy Lehmann @jernealogy.bsky.social · 14/08/2026Update: my first tutorial video is now live! youtu.be/V8jQ6AB8sac #GenHouryoutu.beGet Your Family Tree Into TreeLab | GEDCOM Upload TutorialYouTube video by Genealogy with Jeremy Lehmann 030
Jeremy Lehmann @jernealogy.bsky.social · 13/08/2026Hi #GenHour, how has your week been? Tomrorow I will be releasing the first of a series of short tutorial videos about TreeLab. My hope is that these videos can serve as a reference for users. I plan to publish about 1-2 videos per week. treelab.jernealogy.comtreelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 031
Jeremy Lehmann @jernealogy.bsky.social · 06/08/2026I've made some updates to TreeLab over the past week! Two exciting new features are Neighbors and Calendar. treelab.jernealogy.com #GenHour 1/6treelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 120
Jeremy Lehmann @jernealogy.bsky.social · 06/08/2026Hi #GenHour, how has your week been? I've made exciting genealogy progress this week. Thanks to the additional indexing of records by JewishGen, I was able to locate the death records for three of my direct ancestors in Slovakia. I was able to order digital copies of all the records too! 1131
Jeremy Lehmann @jernealogy.bsky.social · 28/07/2026TreeLab was mentioned in DNAPainter's latest blog post! dnapainter.com/blog/an-expl... The post highlights a number of exciting new family tree tools, and I’m thrilled to see TreeLab included. Many thanks to @dnapainter.bsky.social for the mention! #AncestryHour #GenHour #Genealogydnapainter.comAn explosion of new tree tools | DNA Painter BlogThere are lots of new family tree tools available online. Here I look at some of these tools and at web development in genealogy. 181
Jeremy Lehmann @jernealogy.bsky.social · 28/07/2026How am I just learning about the EverythingWeather app?!? It's fantastic! I love that it features so many great products produced by NOAA. This will become my default weather forecasting app going forward. I recommend others try it out too! 000
Jeremy Lehmann @jernealogy.bsky.social · 17/07/2026I'm excited to launch the Map Room in #TreeLab! The Map Room is a collection of 150+ public domain historical maps, from world atlases down to street-level city plans, spanning the 1600s to the 1900s. Every map is aligned with today's world, so you can fade between past and present. #GenHour 1/2 141
Jeremy Lehmann @jernealogy.bsky.social · 16/07/2026Hi #GenHour, how has your week been? We're dealing with poor air quality in NYC due to wildfire smoke. I'm happy to be indoors. I'm excited to release a major update to TreeLab in the coming days. More to come soon! treelab.jernealogy.comtreelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 131
Jeremy Lehmann @jernealogy.bsky.social · 09/07/2026I continued to make updates to #TreeLab over the past week, including adding a My Research section and PNG image exports to Charts and Maps. Logged in users will see a "What's New" section on their Overview page that will highlight new features. treelab.jernealogy.com #GenHour #Genealogytreelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 070
Jeremy Lehmann @jernealogy.bsky.social · 09/07/2026Hi #GenHour, how is your week going? I came back a few days ago from a trip visiting my wife's family in South America. My biggest #genealogy win? Getting my wife's great uncle to take a DNA test. He is the last of his generation and his testing will help with finding connections. 1/2 170
Jeremy Lehmann @jernealogy.bsky.social · 02/07/2026Hi #GenHour, how has your week been? No big #genealogy updates from me this week as I've been on vacation. But I did create two new maps in TreeLab (treelab.jernealogy.com) that are worth checking out: a new migration map called "Between Places" and another map called "Where & When". 1/2treelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 141
Jeremy Lehmann @jernealogy.bsky.social · 25/06/2026Hi #GenHour! It's been an exciting week as my free genealogy web app, TreeLab (treelab.jernealogy.com), continues to grow. I've just added interactive descendant charts and maps, and they've quickly become some of my favorite features. I'd love to hear what you think if you give them a try!treelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 362
Jeremy Lehmann @jernealogy.bsky.social · 18/06/2026Hi #GenHour, I just published my introductory video on YouTube about my new free TreeLab #genealogy tool. Check it out here: youtu.be/HOdFWplbtAI Try TreeLab: treelab.jernealogy.com TreeLab User Guide: treelab.jernealogy.com/guide/ Let me know what you think if you try out the tool!youtu.beIntroducing TreeLab: A New Way to Explore Your Family TreeYouTube video by Genealogy with Jeremy Lehmann 031
Jeremy Lehmann @jernealogy.bsky.social · 11/06/2026Hi #GenHour! I'm excited to share a soft launch of my new #genealogy tool, TreeLab, before the full launch video comes out next week. Treelab is all about exploring family trees in new ways. TreeLab Website: treelab.jernealogy.com TreeLab User Guide: treelab.jernealogy.com/guide/ 1/5treelab.jernealogy.comTreeLab — GEDCOM AnalyzerUpload your GEDCOM file and instantly explore your family tree — lifespans, ancestor and migration maps, relationship finder, cousin counts, and more. 4140
Jeremy Lehmann @jernealogy.bsky.social · 04/06/2026Hi #GenHour, how has your week been? I've been hard at work developing my new genealogy tool, which helps better understand and contextualize family trees. It's not yet ready to be publicly released, but I'm happy to share information with anyone who wants to take a look! 0111
Jeremy Lehmann @jernealogy.bsky.social · 29/05/2026My video is out now! Check it out here: youtu.be/q_8THg1wfc0 How far back have you traced your own family lines? #GenHouryoutu.beHow Far Back Can I Trace My 8 Family Lines?YouTube video by Genealogy with Jeremy Lehmann 120
Jeremy Lehmann @jernealogy.bsky.social · 28/05/2026Hi #GenHour, my next YouTube video comes out tomorrow! In it, I explore how far back I’ve been able to trace each of my eight great-grandparent lines. It was a really fun video to make, and it serves as a nice summary of the research I’ve done across these family branches over the years. 1100
Jeremy Lehmann @jernealogy.bsky.social · 28/05/2026Hi #GenHour, I hope you are having a great week. I recently created an exciting new genealogy tool and am looking for a few volunteers to try it out and give me their thoughts. Please DM me if you're interested! 130
Jeremy Lehmann @jernealogy.bsky.social · 08/05/2026My cousin counting video has now been published! Check it out here: youtu.be/G9UJG1iBdZ0 #GenHouryoutu.beYou Have WAY More Cousins Than You Think (I Counted Mine)YouTube video by Genealogy with Jeremy Lehmann 010
Jeremy Lehmann @jernealogy.bsky.social · 07/05/2026Hi #GenHour, how was your week? My next YouTube video will be out tomorrow. It's about cousins! Have you ever wondered how many cousins you have? In the video I discuss how "cousin math" works and then I count my own cousins to see how "complete" my tree really is. It was a fun video to make. 380
Jeremy Lehmann @jernealogy.bsky.social · 17/04/2026My latest video is out! Check it out here: youtu.be/_HvS93xpmrkyoutu.beI Discovered My Ancestor Was a Criminal...YouTube video by Genealogy with Jeremy Lehmann 000
Jeremy Lehmann @jernealogy.bsky.social · 16/04/2026Hi #GenHour, I hope you've been having a good week! My next YouTube video is set to be released tomorrow. And I think it's one that many will find engaging! It's about the discovery that my 3rd great-grandfather was a criminal in mid 19th century England. 1/2 140
Jeremy Lehmann @jernealogy.bsky.social · 27/03/2026I became a genealogist completely by accident. In my latest YouTube video, I share my story and reflect on why people get hooked on genealogy. I’d also love to hear your story: what first pulled you into family history research? You can watch the video here: youtu.be/m-AR6vlyE1s #GenHouryoutu.beWhy My 'Boring' DNA Results Changed My LifeYouTube video by Genealogy with Jeremy Lehmann 150
Jeremy Lehmann @jernealogy.bsky.social · 26/03/2026Hi #GenHour, how has your week been? I'm excited to release my next YouTube video tomorrow. It'll be about how I got started with #genealogy. The video is narrative-driven and should appeal to a wide audience. I hope it leads to a broader discussion about what draws people into genealogy. 160
Jeremy Lehmann @jernealogy.bsky.social · 05/03/2026Hi #GenHour, my latest YouTube video has "broken out" with over 28,000 views! I feel so grateful that it has reached a wider audience. #YDNA 071
Jeremy Lehmann @jernealogy.bsky.social · 05/03/2026Hi #GenHour, how is everyone? I'm having some serious #RootsTech FOMO, but I am attending sessions online. Hopefully I'll be able to attend in person one day. There are lots of great #genealogy deals. Check them out at the RootsTech Expo Hall site here: www.familysearch.org/en/rootstech...familysearch.orgFamilySearch.orgDiscover your family history. Explore the world’s largest collection of free family trees, genealogy records and resources. 190
Jeremy Lehmann @jernealogy.bsky.social · 20/02/2026My video is now LIVE! Check it out here: youtu.be/muNhfxECZvk The Cohen oral tradition spans 3,000 years of paternal line descent dating back to Biblical times. But what does science have to say? Does this claim hold up when put to the test? 1/2youtu.beWho Is the Real Cohen? What DNA RevealsYouTube video by Genealogy with Jeremy Lehmann 120
Jeremy Lehmann @jernealogy.bsky.social · 19/02/2026Hi #GenHour, I'm excited to release my next YouTube video tomorrow. It's my longest scripted video yet at over 45 minutes! The video is about applied Y-DNA research. I'll be talking about a new study that investigated a supposed 3,000 year oral tradition of paternal line descent. It's fascinating! 070
Jeremy Lehmann @jernealogy.bsky.social · 19/02/2026Hi #GenHour, I was on vacation last week enjoying some warmer weather. I've come back refreshed and ready to tackle more #genealogy projects. 1/2 140
Jeremy Lehmann @jernealogy.bsky.social · 29/01/2026Hi #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 5151
Jeremy Lehmann @jernealogy.bsky.social · 29/01/2026Hi #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! 1/3 260
Jeremy Lehmann @jernealogy.bsky.social · 27/01/2026A frigid morning in New York City following the Sunday snowstorm. Ice is starting to build up on the eastern side of the Hudson River. 020
Jeremy Lehmann @jernealogy.bsky.social · 20/01/2026A frigid sunrise. It's the coldest day of the winter so far with highs around 20°F. 020
Jeremy Lehmann @jernealogy.bsky.social · 08/01/2026Hi #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. 020
Jeremy Lehmann @jernealogy.bsky.social · 01/01/2026Hi #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!youtu.beTop 5 Genetic Genealogy Stories of 2025 | MitoTree, IGG, and The Rise of WGSYouTube video by Genealogy with Jeremy Lehmann 040
Reposted by Jeremy LehmannClimatologist49 @climatologist49.bsky.social · 21/12/2025Today 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 14210
Jeremy Lehmann @jernealogy.bsky.social · 19/12/2025My video is live! Check it out here: youtu.be/fJYsuwl1jHo #GenHouryoutu.beY-DNA Targeted Testing: Genealogy’s Toughest Challenge!YouTube video by Genealogy with Jeremy Lehmann 050
Jeremy Lehmann @jernealogy.bsky.social · 18/12/2025Hi #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. 1/4 130
Reposted by Jeremy LehmannJames Franklin @franklinjamesl.bsky.social · 17/12/2025These 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. 12516198
Jeremy Lehmann @jernealogy.bsky.social · 12/12/2025My 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 #YDNAyoutu.beFTDNA Discover Explained: A Complete Guide to Y-DNA Haplogroup ToolsYouTube video by Genealogy with Jeremy Lehmann 041
Reposted by Jeremy LehmannShai Carmi @shaicarmi.bsky.social · 11/12/2025Fascinating 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. 061
Jeremy Lehmann @jernealogy.bsky.social · 11/12/2025There have been some beautiful views of Manhattan the past couple days! 0785
