Is This the Same Person? Telling Apart People with the Same Name
Two John Millers in one county is the classic genealogy trap, and the source of countless wrong trees. How to tell same-name people apart, and how to prove which records belong to whom.
Families reused names generation after generation, and cousins were often named after the same grandfather. The result: in many counties there were two, three or more men with the same name living at the same time. Mixing them up is one of the most common mistakes in genealogy, and online trees are full of "John Millers" who were born in one state, married in another and died in a third, because three different men were merged into one.
Warning signs that you've merged two people
- A man appears to be in two places at once, such as on tax lists in two counties in the same year.
- A wife has children who are too far apart in age: one at 18, the next at 52.
- Ages don't fit, like a man marrying at 12 or serving in a war at 70.
- A record says "Sr." or "Jr." and you've ignored it.
- An online tree attaches records from widely separated places without explaining the move.
Step 1: Collect every record of the name
Don't just collect records you think are your ancestor. Collect every record of anyone with that name in the area and time period: deeds, tax lists, court records, censuses, church records, military records. You can't separate people until you see all of them.
Step 2: Sort by identifiers
Look for details that tie each record to a specific man:
- Wife's name, especially in deeds where she released her dower
- Land location: a creek, a township, a neighbor. A man's land rarely moves. See Deed Platting.
- Occupation or title, like "John Miller, blacksmith" or "Capt. John Miller"
- Signature or mark. Compare signatures across deeds; a man who signed his name isn't the same as one who made his mark.
- Associates: who witnessed his deeds, posted his bonds, lived next to him
- Age, from tax lists, militia rolls and censuses
- Religion and church membership
Make a table with one row per record and columns for each identifier. Patterns emerge quickly: records with the same wife, the same creek and the same neighbors belong together.
Step 3: Understand "Junior" and "Senior"
In early America, "Jr." and "Sr." often meant only the younger and older of two men with the same name in a community. They might be father and son, uncle and nephew, or not related at all. And when the older man died, "John Miller Jr." might become plain "John Miller" or even "John Miller Sr." in later records. Track the labels over time; don't assume a father-son relationship from them.
Step 4: Follow each man through time
Build a separate timeline for each person you've identified, from first record to last. A man usually appears on tax lists at 21 (or 16 in some places), marries, buys land, has children, sells land, makes a will and dies. If one man's timeline has gaps or contradictions, you may still have records from two men mixed in.
Step 5: Use the FAN club
When two men are hard to separate directly, separate their friends, associates and neighbors. If one John Miller's deeds are always witnessed by Hensleys and the other's by Bakers, the Hensley and Baker families will help you sort them. See The FAN Club.
Step 6: Write a proof summary
Once you've decided which records belong to your ancestor, write a short explanation: which records you assigned to him, and why, and which belong to the other man, and why. If you ever find a conflicting record, you'll know exactly what reasoning to revisit. See The Genealogical Proof Standard.
DNA can help
If two same-name men both have living descendants, DNA can help separate the lines. Descendants of your ancestor should match each other and your family, and not match the other man's descendants in the same way. Y-DNA is especially useful for same-surname men. See Y-DNA and Surname Projects.
Fixing merged people in online trees
If you find a merged person in a shared tree like FamilySearch's, don't just delete records; explain your reasoning in the notes and attach sources, so others understand the change. In your own tree, keep the second man as a separate, unconnected person with his records. You may need him later.