Ready to craft the perfect prompt?
We must learn to balance the high-tech capabilities of LLMs with the meticulous, evidence-based nature of family history. Beginners often struggle because they treat AI like a search engine, fact-finding, rather than a research assistant, analysis.
What is an LLM, you ask?
For someone focused on family history, it helps to think of an LLM (Large Language Model) not as a computer program that "searches," but as a well-read assistant that has "read" almost everything ever digitized.
At its simplest, an LLM is a type of Artificial Intelligence trained on massive amounts of text data, books, census explanations, historical journals, and websites. Because it has processed trillions of words, it understands the patterns of human language, the context of history, and the logic of research.
Why it Matters for Genealogy
​For a researcher, an LLM acts like a 24/7 Research Consultant. It doesn't "know" your grandfather personally, but it knows:
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Historical Context: It can explain why a coal miner in 1880 Pennsylvania might have moved to Ohio.
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Language Translation: It can take a 19th-century German baptismal record and translate it into modern English.
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Document Analysis: It can take a messy transcription of a will and summarize the key heirs and assets.
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Research Planning: It can suggest which archives to contact if a courthouse burned down in a specific county.
The Most Important Distinction: An LLM is not a database like Ancestry or FamilySearch. Ancestry is a filing cabinet where you go there to find a specific "folder" or a record. An LLM is a librarian where you talk to it to figure out which filing cabinet to look in, or to help you read the messy handwriting once you find the folder.​
The Genealogy Prompt Framework: "R-G-C-T-F"
Familiarize yourself with this framework, then move onto a couple of exercises including your "first win."
01
Since AI can "fabricate" or make up records, the best first prompt for a genealogy beginner isn't asking the AI for facts about your ancestors. Instead, the best first step is to use the AI as a Research Strategist or Consultant.​​​
Key components of the framework in the image above
"Role: Who is the AI? Goal: What is the specific objective? Context: What do you already know? Task: What should the AI do with that context? Format: How should the answer look?"
Example prompt from framework image above
“Act as a professional genealogist with expertise in 19th-century Irish migration. I want to identify potential transit hubs for my ancestor. Ancestor: Patrick Sullivan, born 1840, Ireland, arrived in NYC circa 1865. Create a list of the 5 most likely ports of departure. Provide the results in a table with columns for Port Name, Primary Shipping Lines, and Record Availability.”
02
If you have tried the prompt framework example above, then let's move onto a prompt that every genealogist needs, a "research plan" prompt. ​
A basic research plan prompt
"Act as an expert genealogist specializing in [Country/Region] research during the [Century/Time Period]. I am stuck researching my ancestor, [Name], who was born around [Year] in [Location] and died in [Year] in [Location]. I have already searched [List records you’ve checked, e.g., 1900 Census, FindAGrave].
Please: 1) Suggest 5 specific record types I may have overlooked for this time and place. 2) Explain why these records are relevant to this ancestor's profile. 3) Provide a step-by-step prioritized plan for what I should search next."
The basic research plan prompt with example details
"Act as an expert genealogist specializing in Huntingdonshire, England and Jefferson County, Illinois, United States research during the 19th century. I am stuck researching my ancestor, Alice Inglett, who was born around 1821 in Huntingdonshire, England and died in 1893 in Jefferson County, Illinois, I have already searched the 1850 US Census, 1860 US Census, 1870 US Census and 1880 US Census, Illinois County Marriage Index 1800-1940, and US Find-a-grave index.
Please: 1) Suggest 5 specific record types I may have overlooked for this time and place with focus on what is available in England. 2) Explain why these records are relevant to this ancestor's profile. 3) Provide a step-by-step prioritized plan for what I should search next."