New Offering: Member Survey plus Class

Blog Header - “Creating an Individualized Genealogical Educational Plan.”

We offer a new service!

Have you wanted to learn more about your society members current interests? We can help.

When booking the presentation “Creating an Individualized Genealogical Educational Plan,” We can work with your society to help you learn more about your members’ current interests.

Here’s what is included with the speaker’s fee:

  • Work with your designated society member to create a customized survey
  • Provide a link for society members to use
  • Provide a brief report, with suggestions about how to use the results

Here is a review from the Baltimore County Genealogical Society:

As always, our society meeting attendance is higher with any of Dr. McMahon’s presentations.  It is a reflection of how valuable the information she has to offer is in expanding ancestral research. Her latest guide, Creating an Individualized Genealogical Education Plan provides an introspective approach to research that is deeper than the traditional “to do” list.  With many societies and genealogy groups stepping up their outreach with more online content and lectures via zoom, the Educational Plan presentation is practical and essential for targeting your research goals. 

Contact us to book your society’s survey and talk!

The Virtual Record Treasury of Ireland

Blog Post - the Virtual Record Treasury of Ireland

100 years ago at the start of the Irish Civil War, a fire at the Public Record Office of Ireland (PROI) in the Four Courts complex destroyed the Record Treasury, a repository holding seven hundred years of records.

Trinity University began the Beyond 2022 project to bring together historians and computer scientists to reconstruct the library in a virtual format. The project identified replacement documents then built a virtual archive using digitized images of the records that survived, duplicates of documents that survived in other locations and record substitutes. They used a database of what was stored on each shelf, bay and floor in the PROI in 1922. The records’ metadata, images and transcriptions are linked. Five years later, on the centenary, the Virtual Record Treasury of Ireland (VTRI).

At the core of this effort is the National Archives Ireland, Public Record Office of Northern Ireland, The National Archives (UK), the Irish Manuscripts Commission, and Trinity College Dublin Library, and 70 other participating institutions from around the world.

VRTI officially launched on 27 June 2022. After five years of work, the project launched the Virtual Record Treasury of Ireland.

Dublin Library (from Pixabay)

Visit the VRTI and search or scroll down to learn more. This is a free resource that will be available online permanently.

To learn more:

Visit the Virtual Record Treasury of Ireland

Virtual Reality Visit

“Seven centuries of public records brought back to life 100 years after Four Courts fire”

Beyond 2022 at The National Archives. What is it?

The Public Record Office of Ireland fire and the Beyond 2022 project

Biological Anthropology and Genealogy

Blog Banner Biological Anthropology and Genealogy

This past semester I decide to follow the archaeology course by studying more about anthropology. I took a course about Biological Anthropology (also known as Physical Anthropology). As a reminder, there are four branches of Anthropology, with the other three being Archaeology, Cultural Anthropology and Linguistic Anthropology. (See my blog post about Archaeology and Genealogy.)

Biological Anthropology is a course for gaining a deeper understanding of how humans came to be. It is also a course that provides a strong foundation for understanding DNA. Most genealogists have incorporated the use of DNA to some extent, and this was a major selling point of the class for me. The understanding of evolution taught during this course may be more than the average genealogists who use DNA as a tool need, but it was interesting to learn about our species’ ancestors and our recent hominin cousins. I found that understanding how ancient DNA relates to our DNA gave a deeper context. It was informative to learn the newer findings about Neanderthals and their culture, as well as Denisovans, and both of their contributions to our DNA.

Using DNA in our genealogy is complemented by learning about mutations, genetic drift, gene flow, population bottlenecks and founder effects build a strong background for understanding DNA in populations. Epigenetics covers the changes we make to our DNA over our lives, and how that might be passed on to future generations. These topics help us move forward in understanding more of the what is recorded in our DNA test results and comparisons with others. This is also the hardcore science when you are viewing mutations in YDNA or mtDNA. For people who like to understand the internal workings of nuclear DNA, how it forms proteins, and how the mitochondria work, this course sheds light on those topics as well.

For my final project, the Professor encouraged me to create a final project that was not in a report format. It was an interactive project that I created in about the Bioethical Issue: Use of Genetic Information. It is included case studies of biobanks, law enforcement use of consumer DNA testing and medical studies where consumers upload DNA. The additional step was to show the contribution of anthropologists to understanding and communicating the bioethical issues.

Cover Page for Bioethical Issue Project

The textbook we used was “EXPLORATIONS: An Open Invitation To Biological  Anthropology.” It is available for free online at https://explorations.americananthro.org   You can choose read the book online or download chapters. Chapter 3 discusses molecular biology and genetics, including genotypes and traits, DNA replication and the cell cycle, transcription and translation during protein synthesis. Chapter 4 discusses population genetics. A video for each chapter can be found at this YouTube playlist.

Biological Anthropology can help us to know and understand more about genetics as well as about our deepest ancestry.

What’s next for me? Hopefully I will be taking Cultural Anthropology in the Fall.

This blog post is copyright ©2022 by Margaret M. McMahon, Teaching & Training Co., LLC. All rights reserved. No part of this post may be reproduced in any manner whatsoever without written permission, except in the case of brief quotations in articles and reviews. All copyrights and trademarks mentioned herein are the possession of their respective owners and the author makes no claims of ownership by mention of the products that contain these marks.

Book Review: “DNA for Native American Genealogy”

DNA for Native American Genealogy - Genealogical.com

When the esteemed Roberta Estes of the DNAeXplained Blog writes a book about DNA, there is a justifiable expectation that the work will be accurate, informative and definitive. Among Ms. Estes many accomplishments are launching the Million Mito Project and being a National Geographic Society Genographic Project affiliate scientific researcher. This is a very thoughtful book, intended to put actionable information in the hands of readers that will guide them through the process of learning about Native American genealogical research.

Determining Native American ancestry from DNA testing is not necessarily the easiest task. Ms. Estes takes the reader through comprehensive steps to examine how to work with ethnicity estimates, autosomal (atDNA) matching, mitochondrial (mtDNA) and Y DNA in identifying Native American DNA.

Part 1 is informative, containing an overview of the concept of tribal membership and asks readers to consider their goals for determining membership. Ms. Estes’ thoughts about cultural appropriation are well advised, and challenge each reader pursuing this research to think about the topic.

In Part 2 readers experience topics in ethnicity and population genetics. As both a professional scientist and genealogist the author is able to take readers as deep into genetic topics as they want to go. Her goal is for readers to understand the topics at a comfortable level, and she provides examples with clear illustrations.

Part 3 gives specifics about how to use the autosomal tools at major vendors in the search. The mitochondrial DNA portion of the book (Part 4) and the Y DNA portion of the book (Part 5) discuss the relevant ancient and modern haplogroups, sharing in detail which occur in Native American populations, and their tribal affiliations. These parts include maps of where the haplogroups are found. Part 6 is a roadmap and checklist which guides readers through the journey of investigating Native American ancestors through the use of DNA.

As with every book I review, I read this book from cover to cover. Given that my ancestors’ paper trails and our family’s genetic results show no indication of a Native American ancestor, a friend stepped in to help. His family history contains a story about an ancestor who was a member of a specific tribe, without any evidence. The story of this ancestor is currently unknown prior to a marriage that took place in Colonial America. He was willing to let me use his test results to see if any information could be found in his DNA that might potentially shed light on this family story, with his goal being genealogical information. The ancestor was not in his direct matrilineal or patrilineal line, so I turned to Part 3 of the book. Given how many generations back this ancestor had lived, the existence of identifiable regions of Native American DNA was doubtful. The history of the area suggests that the ancestor may have been a descendant of a tribal member rather than a tribal member, which lessened the chances of uncovering a segment.

My friend had tested on Ancestry, and then transferred his test results to FamilyTreeDNA, then had unlocked his autosomal transfer in order to use the ethnicity tools. First, I used the FamilyTree DNA myOrigins® (version 3) as shown in the book. As we had anticipated, his results showed 0% origin in the Americas. (His results also showed 0% Asian origins.) Opting in to Compare myOrigins® showed some interesting information for him to consider with his other matches. Part 3 also clearly walked me through the options within the Chromosome Painter to see a visual representation as well as how to view the locations of the chromosome segments. Next, the book took me through the features of using ethnicity information on Ancestry, with explanations about the Genetic Communities. Ancestry provided European matches, but no other traces of matching other parts of the world. Had Native American DNA segments been identified in my friend’s DNA, I would have known what to do next and how to do it. Although DNA may end up a part of the solution to my friend’s question about his ancestor, this family story will take more time and effort to prove or disprove.

Even though this particular case was not successful, there is clear value of this book to educate readers and  guide them through identifying the appropriate steps they need to take to research known and potential Native American ancestors through the use of DNA.

This book picks up where the theories end and your work begins. The book contains references to source material, including Ms. Estes’ DNAeXplained blog, for those who want to go deeper into learning about the topics that are presented. For those who want to incorporate genetic genealogy into their Native American genealogical research, this book will be a complete introduction and will also serve as a reference during the research process. Readers will find the haplogroup references to be very useful in their research. The completeness of this book truly is, as Ms. Estes describes it, a labor of love.

The book is available at Genealogical.com and other booksellers.

This blog post is copyright ©2022 by Margaret M. McMahon, Teaching & Training Co., LLC. All rights reserved. No part of this post may be reproduced in any manner whatsoever without written permission, except in the case of brief quotations in articles and reviews. All copyrights and trademarks mentioned herein are the possession of their respective owners and the author makes no claims of ownership by mention of the products that contain these marks.

You can search the 1950 US Census!

Blog Banner - You Can Search the 1950 US Census

Searching the 1950 US Census will be an awkward and cumbersome search until every field is indexed. But you can give it a try.

Be sure you to navigate to the search page:  https://1950census.archives.gov/search

The 1950 US Census NARA Search Page



The search has limited features that include: name, state, county and enumeration district. You do not have to enter search terms any field. For example, you can leave the county or the enumeration district blank.

1950 US Census Search Inputs


If you cannot see the population schedule sheet for the search result on the right, click on “Population Schedule” to see the actual census sheet.

Of course I had better luck in small towns with families having unique names. Just as in any census, try to search for unusual family names. I have even had some success searching boroughs of New York City.

How about a quick hands-on exercise to find a name on the census? I have a simple example using my favorite poet, Ogden Nash.


Name: Frederick Ogden Nash
State: Maryland

1950 US Census Search fields for Ogn Nash


The first result on the right-hand side, listed Odgen Nash (rather than Frederick Ogden Nash) and showed him with his wife Frances, and his children Linell and Isabel. Note: this result came up without entering a county or enumeration district.

Ogden Nash search result in 1950 US Census

On the bottom of each search result is the “Machine Learning (AI) Extracted Names” section that can help by showing you the names that appear on the same census sheet. The AI-generated indexing was surprising to me because it does try to offer alternate spellings of names.

Odgen Nash and family in 1950 US Census

To download the sheet, click on the three dots that appear under “Help Us To Transcribe Names” to see the option to download the sheet.

Option to download

Only the first entry is expanded. If your family member is in one of the other entries, click on “Population Schedule” to see the actual page of the census.

Multiple results (unexpanded)

And the population schedule for that result will expand. (Only one population schedule sheet will appear in the results on the right at one time.)

Expanded Population Schedule

I have posted a short video on our YouTube channel with the example search in action at: https://youtu.be/rLgq2nqNmbA

Let me know how you do.

This blog post is copyright ©2022 by Margaret M. McMahon, Teaching & Training Co., LLC. All rights reserved. No part of this post may be reproduced in any manner whatsoever without written permission, except in the case of brief quotations in articles and reviews. All copyrights and trademarks mentioned herein are the possession of their respective owners and the author makes no claims of ownership by mention of the products that contain these marks.