Research Guide

Parish or Commune? The 1792 Line That Decides Where Your Record Is

By François · Racines Genealogy · Published September 3, 2026

Three documents on your desk use the word parish, and they do not mean the same thing.

The Québec marriage act says your ancestor came from a parish in France. The Louisiana address on a cousin's letter gives a parish that is a unit of local government. The French departmental archive's catalogue offers you parish registers up to a certain date and then something else afterwards. Same word, three objects, and the confusion between them accounts for a great many searches that fail in the right country and the wrong century.

Here are the three meanings, the line that separates the first from what replaced it, and what to do about all of it on a Tuesday afternoon with an archive website open.

Meaning one: the parish of the Ancien Régime

Until the Revolution, the parish was the working unit of French life. It was religious, but it was also the frame within which people were counted, married and buried, and it is the unit in which the records were kept.

FranceArchives, the portal of the French national archives service, dates the obligation precisely: “La tenue des registres paroissiaux est obligatoire depuis l'ordonnance de Villers-Cotterêts de 1539, mais il existe quelques registres paroissiaux depuis le XIVe ou le XVe siècle dans certains diocèses.” Parish registers have been compulsory since the ordinance of Villers-Cotterêts of 1539, and a few dioceses hold registers going back to the fourteenth or fifteenth century.

This is the parish your seventeenth-century ancestor belonged to, and it is the one the Québec act is naming. It is also the one that no longer exists as an administrative object.

Meaning two: the Catholic parish of today

There are still Catholic parishes in France, and they are not the same things. They have been redrawn, merged and regrouped, most heavily in recent decades as the number of priests fell, so that one parish today can cover a dozen villages that each had their own church and their own register in 1700.

A present-day parish therefore tells you almost nothing about where a 1700 register is kept. Looking up your ancestor's parish on a diocesan website and writing to that address is the most natural mistake in this subject, and it will reach a priest who has no idea what you are talking about. The old registers are not with the Church. They are in a public archive, which is the point of the second half of this article.

Meaning three: the Louisiana civil parish

If your family is Cajun or Creole, the word means something else again, and it is worth knowing that the resemblance is not a coincidence.

Richard Campanella, writing for 64 Parishes, the encyclopedia of the Louisiana Endowment for the Humanities, traces the sequence. Under French and Spanish rule the colony was organised ecclesiastically, in units called paroisses, parroquias and parishes, and there were twenty-one of them by the late 1700s. In 1805 the Legislative Council subdivided the Territory of Orleans into twelve counties whose boundaries followed the ecclesiastical parishes; in 1807 those were adapted into nineteen official parishes for civil purposes; and by the Constitution of 1845 the word county had disappeared from the document entirely.

Why the church word won over the American one, Campanella declines to settle: he suggests it was more familiar and more popular in a mostly French-speaking Catholic state, a triumph of localism over outside change, and then writes, “So far as I can determine, it's a mystery.” Which is a good deal more honest than most explanations you will read.

For research the practical point is blunt: a Louisiana parish is a county. It is not a unit that ever kept a French register, and it has no equivalent on the other side of the Atlantic.

The line: 1792

Now the discontinuity that everything turns on. The same FranceArchives page puts it in one clause: “Les registres d'état civil, tenus par le maire d'une commune depuis 1792, enregistrent les naissances, mariages et décès ayant lieu dans la commune.” Civil registration, kept by the mayor of a commune since 1792, records the births, marriages and deaths occurring in that commune.

Read the two quotations together and the whole shape of French research appears:

Two regimes, two record keepers, two territorial units, one date. Everything a French archive offers you is arranged along that line, which is why a catalogue seems to change its mind halfway through.

Why this catches North Americans in particular

Here is the part that is rarely explained, and it is not the reader's fault at all. A Québécois or Franco-American researcher arrives in France with an instinct that is exactly right at home and wrong from 1792.

Bibliothèque et Archives nationales du Québec describes the Québec practice: “En Nouvelle-France, suivant la pratique courante en France, les prêtres catholiques remplissaient deux copies de chacun des registres”, one being “la copie religieuse, conservée à la paroisse, et la copie de l'État, déposée chaque année au palais de justice.” In New France, following the practice then current in France, Catholic priests filled in two copies of every register: the church copy, kept at the parish, and the state copy, deposited each year at the courthouse. After the Conquest of 1760 the obligation was gradually extended to other denominations.

What to do with all this

• Date your target first. Before 1792 you are looking for a parish register. After 1792 you are looking for civil registration. That one decision determines which series you open and what the document will look like.
• Find the commune that contains your parish. The departmental archives hold both series, and in practice you will be searching a catalogue arranged by commune. So the old parish name has to be resolved to a modern commune before anything else will work. That resolution is its own small piece of research, and it is where most searches quietly go wrong.
• Do not write to the parish. The pre-Revolutionary registers are in the departmental archive, not the presbytery, and most are online as images, free. See the free French archives online.
• Use the ten-year indexes after 1792, and expect none before. Civil registration comes with decennial tables. Parish registers do not, which is why pre-1792 work means reading, and why knowing the exact parish matters so much more.
• Keep the Louisiana meaning in a separate drawer. If a document says St. Landry Parish, that is a county in Louisiana, not a French parish, and nothing about it will help you locate a register in France.

Which level of French administration keeps what is set out in how France is organized. For the method from an American document to a French register, see how to find the French village your ancestor came from, and for the specific problem of a Québec act naming a French parish, read what happens next, in France, when a Québec line reaches 1650.

Common questions

What is the difference between a French parish and a commune?

A parish was the unit in which the priest kept the registers, compulsory since the ordinance of Villers-Cotterêts of 1539. A commune is the civil unit whose mayor has kept the registration of births, marriages and deaths since 1792. They are two successive systems rather than two names for one thing, and the records are held in two different series.

Are old French parish registers held by the church?

The pre-Revolutionary registers are held by the departmental archives, not by today's parishes, and most departments have put them online free of charge. A modern Catholic parish may cover many villages that each had their own register in 1700, so it is not a useful address for a research request.

Why does Louisiana have parishes instead of counties?

Because the colony was organised ecclesiastically under France and Spain. In 1805 the Territory of Orleans was divided into counties whose boundaries followed those church parishes, in 1807 they were adapted into nineteen official civil parishes, and by the Constitution of 1845 the word county had vanished from the text. The historian Richard Campanella, who set out this sequence, adds that the reason the church term prevailed is not settled.

My Québec ancestor's act names a parish in France. Where do I look?

In the departmental archives of the department that now contains that place, in the parish register series if the event is before 1792 and in the civil registration if it is after. The first task is turning the parish name, often written by ear, into a modern commune.

Sources and figures. The obligation of 1539 and the transfer of registration to the communes in 1792 are quoted from FranceArchives, the portal of the French national archives service. That page gives the year 1792 and not the day, so this article does the same. The Québec practice of duplicate registers, with the state copy deposited annually at the courthouse, and its extension to other denominations after 1760, is quoted from Bibliothèque et Archives nationales du Québec; that page does not date the later transfer of responsibility to the Directeur de l'état civil, so no date is given here for it. The Louisiana sequence, and the quoted remark that the switch remains a mystery, are from Richard Campanella, “A Mysterious Switch”, in 64 Parishes, the encyclopedia of the Louisiana Endowment for the Humanities. Where this guide describes how to work from an old parish name to a modern commune, that is method rather than a documented figure, and is offered as such.

François is a French-born genealogist living in the United States. He traced his own family's history, and its old stone mill, back to the 1500s through the French archives, and now helps American and Canadian families do the same. Continue with how France is organized · how to find the French village your ancestor came from · what happens next, in France, when a Québec line reaches 1650 · the free French archives online · how to read old French handwriting, once you reach the registers. To see the whole method applied to one real family, read one real family, traced from New Jersey to two Alsatian villages, then the full report, with every source cited.