French Royal Names: Why So Many Kings Were Named Louis

Walk through the Château de Versailles and ask a guide which king built its Hall of Mirrors, and you'll hear a name that shows up on plaque after plaque across France: Louis. Not just one Louis — eighteen French kings carried that exact name, from the ninth century all the way to 1824. If you've ever tried to say "Louis the Fourteenth" in French and gotten a confused look back, you've already run into one of the more entertaining quirks of French royal names, and it hides a real grammar rule.

Why French Royal Names Still Trip Up Learners

You don't need to be a history buff to run into this constantly. Bridges, squares, and street signs across France carry the names of these kings — the Pont Louis-Philippe over the Seine, countless rues named after a Charles or a Henri in nearly every city. Tour a château, watch a French period drama, or read a museum plaque, and royal numbers are everywhere: Louis XIV, François Ier, Henri IV.

Those Roman numerals follow a genuine French pronunciation rule, one that trips up learners who assume it works like English. Once you know that rule, plus the family-naming logic behind recycling the same first names for a thousand years, every plaque you pass starts making a lot more sense.

A Family Tradition: Why the Same Names Kept Coming Back

France's royal dynasties didn't pick a name for a new prince the way modern parents browse a baby-name list. From the Capétiens (Capetian dynasty), who took the throne in 987, through the Valois and Bourbon dynasties that followed, a new king's name usually honored his father, grandfather, or an admired ancestor. That's why a small handful of names — Louis, Charles, Philippe, Henri, and François — cycle through French history again and again, instead of the variety you'd expect across nearly a thousand years of monarchy.

Louis became the runaway favorite for a specific reason: Louis IX, who reigned in the thirteenth century, was canonized as a saint in 1297 — Saint Louis. Naming a son after a sainted king borrowed his piety and legitimacy for the next generation. By the time the monarchy ended for good, eighteen kings of France had carried the name, from Louis Ier in the ninth century to Louis XVIII, who died in 1824.

How to Read a Royal Number in French

Here's the rule that catches almost every English speaker off guard: French does not use ordinal numbers ("fourteenth," "sixteenth") for royal names the way English does. Instead, French uses plain cardinal numbers — deux, quatre, quatorze, seize — for every number after the first.

So Louis XIV is said Louis quatorze (Louis fourteen), never Louis quatorzième. Henri IV is Henri quatre (Henri four), not Henri quatrième. The lone exception is the number one, which keeps the ordinal form: Louis Ier is Louis premier (Louis the first), never Louis un.

Grammar Note

• Use premier/première (first) only for the number I — the sole ordinal exception in the whole system.
• For II and above, use the plain cardinal number: deux, trois, quatre, quatorze, seize — never the -ième ordinal ending.
• Common mistake: saying Louis quatorzième instead of Louis quatorze — natural instinct in English, incorrect in French.
• The rule extends beyond French kings: popes (Jean-Paul II → Jean-Paul deux) and foreign monarchs discussed in French (Elizabeth II → Elizabeth deux) follow the same pattern.

French news anchors and history teachers use this exact cardinal-number rule today for any monarch, in any country — one of the rare grammar points you can absorb just by half-listening to French coverage of a royal event.

Legendary Nicknames Behind the Numbers

Bare numbers don't tell you much about a king's personality, so France gave many of its monarchs vivid nicknames — surnoms — that stuck far more firmly than the official numbering ever did.

Louis XIV is remembered as le Roi-Soleil (the Sun King), tied to sun imagery he used at Versailles to present himself as the source of all light in France. The Carolingian king Charles II picked up le Chauve (the Bald) — historians still debate whether the label was literal or ironic. Philippe IV became Philippe le Bel (Philip the Fair, meaning handsome), and Henri IV earned two nicknames at once: le Bon Roi Henri (Good King Henry), for easing France out of religious war, and le Vert Galant (the Green Gallant), a wink at his active romantic life well into old age.

Key Phrases

• le roi (luh rwah) — the king
• la reine (lah wren) — the queen
• le règne (luh reh-nyuh) — the reign
• le trône (luh trohn) — the throne
• le sacre (luh sahkr) — the coronation
• le surnom (luh sur-nohm) — the nickname
• la dynastie (lah dee-nah-stee) — the dynasty

[AUDIO: le roi] [AUDIO: le surnom]

From Throne to Street Sign: Royal Names in France Today

France abolished its monarchy for good in 1870, but these French royal names never really left. Walk around Paris and you'll cross the Pont Louis-Philippe over the Seine, or pass streets named for a Charles or a Henri in nearly every city. The Revolution wasn't shy about erasing royal names it disliked, either — the grand square built to honor Louis XV was defiantly renamed Place de la Concorde in 1795, a name it has kept ever since.

The story doesn't quite stop at Louis XVIII, either. By one common accounting, Louis-Antoine, Duke of Angoulême, briefly held the throne as Louis XIX for about twenty minutes in 1830, abdicating before he was ever crowned. Today, France's Legitimist royalists even recognize a living pretender who styles himself Louis XX, despite the country having been a republic for over 150 years — and Louis itself remains one of the most popular names given to French baby boys today, proof a name can outlast the monarchy that made it famous.

Reading Royal Names Like a Local

Next time you visit a château, watch a French historical drama, or read a plaque on a Paris street corner, try reading the king's number out loud before checking whether you got it right.

• Step 1: Spot the Roman numeral next to the name — Louis XVI, François Ier, Charles X.
• Step 2: If it's a I, say premier/première; for II or higher, use the plain cardinal number — Louis seize, Charles dix — and notice how natural it sounds once you drop the -ième ending.

Practice Exercises

• Fill in the blank: Louis XIV is pronounced "Louis ___," never "Louis quatorzième."
• Multiple choice: which number keeps the ordinal form premier? (a) I (b) II (c) every number
• Translate/say aloud: how would you pronounce Henri IV in French?
• Fill in the blank: Louis XIV's nickname was le Roi-___, meaning "the Sun King."
• True or false: France still has a reigning king today.
• Fill in the blank: the Capetian dynasty that began the royal-naming tradition took the throne in the year ___.

Answer Key

• quatorze — Louis quatorze, using the plain cardinal number.
• (a) I — premier/première is the only ordinal form used; every other number is cardinal.
• Henri quatre.
• Soleil — le Roi-Soleil (the Sun King), Louis XIV's famous nickname.
• False — France abolished its monarchy in 1870, though a Legitimist pretender still styles himself Louis XX today.
• 987 — the year Hugh Capet founded the Capetian dynasty.

A Name That Outlasted a Monarchy

• French drops the ordinal ending for royal numbers — say Louis quatorze, not "Louis quatorzième" — with premier/première as the lone exception for the number I.
• The same handful of French royal names — Louis, Charles, Philippe, Henri, François — repeat throughout history because dynasties named sons after honored ancestors, especially the canonized Saint Louis.
• Nicknames like le Roi-Soleil and le Bon Roi Henri often outlived the bare numbers, and the names still mark streets, bridges, and birth certificates across France today.

Next time you spot a Roman numeral next to a French king's name, you'll know exactly how to say it out loud. For more on French numbers, browse Passage's lesson on French ordinal numbers, or explore the Vocabulary section for more names and the stories behind them.