“Born in Germany.” “Born in Alsace-Lorraine.” “Born in France.” It is common to find all three answers for the same ancestor, in census returns, naturalization papers or passenger lists. None of them is necessarily wrong — the border simply moved several times.
Before searching the archives, the first step is to find the right place. Here is how I approach it.
Alsace-Lorraine: what it really means
“Alsace-Lorraine” was the name of the territory annexed by the German Empire in 1871. It covered Alsace (today the Bas-Rhin and Haut-Rhin departments) and the northern part of Lorraine (roughly today’s Moselle). The rest of Lorraine — Meurthe-et-Moselle, Meuse and Vosges — stayed French.
So an ancestor “from Alsace-Lorraine” born between 1871 and 1918 may come from Alsace or from Moselle — two different regions, with different archives.
Clues in your family papers
- The spelling of the village. A German name (Diedenhofen, Saargemünd, Bolchen) often points to Moselle; I can match it to its French name.
- The date of birth or departure. Between 1871 and 1918, “Germany” on a document does not mean your ancestor was German-born in today’s sense.
- The religion and the surname. They can help narrow down the area, never prove it on their own.
- The port of departure on a passenger list (often Le Havre, Antwerp or Bremen) and the naturalization record, which sometimes gives the exact village.
- DNA results showing “France” and “Germanic Europe” are consistent with Lorraine roots, but only the records can confirm a place.
What I do — and what I don’t
I research Lorraine ancestors, above all in the Moselle archives, and also in Meurthe-et-Moselle, Meuse and Vosges. If your clues point to Alsace instead, I will tell you so honestly and explain which archives hold the records, rather than take on research outside my field.
Identifying the right village is often the object of a custom investigation (from €150): one precise question, a sourced answer, and the uncertainties clearly flagged.
→ Send me your clues — free quote within 2 business days
From a German name to a French village: an example of method
Suppose a naturalization record says your ancestor was born in “Diedenhofen, Germany” around 1880. Diedenhofen is the German name of Thionville, in Moselle. The next steps are simple but must be done carefully:
- Identify the French name of the place and check that no other village has a similar name.
- Search the civil registers of that town for the right years, allowing for variations in the spelling of the surname.
- Check the parents named in the birth record against what you already know (names, ages, occupation).
- Look for a second, independent record (marriage, census, military record) before confirming the link.
This last step matters: homonyms are frequent in Lorraine villages, and a single record is not always enough to prove that you have found the right person.
Frequently asked questions
My ancestor is listed as German. Does that mean the family was German?
Not necessarily. Between 1871 and 1918, most people living in Moselle were officially German nationals. Some families were German immigrants, others were French families who stayed after the annexation. Only the records can tell which applies to yours.
What if I only know “Lorraine”?
That is a common starting point. Combined with a surname, an approximate date and the documents you have, it is often possible to narrow the search down to a few villages. I will tell you in the quote how realistic it is before any work begins.