Name Awesome

Irenaeus

#12,743 in 2025Boys' name

Peace

Irenaeus has been given to 5 babies in the U.S. since 2025. In 2025 it ranked #12,743 of 13,926 boys’ names in use. Its peak year was 2025, with 5 recorded.

Babies named Irenaeus, 2025

1 in 663,000

Irenaeus over time, 1880–2025

Boys
024618801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Irenaeus: meaning, origin, and history

Peace

Ancient Greek

What Irenaeus means

Irenaeus means “peace”, associated with eirḗnē.

Dictionary etymologyReferences, data & attribution

From Latin Īrēnaeus, from Ancient Greek Εἰρηναῖος (Eirēnaîos), from εἰρήνη (eirḗnē, “peace”).

Excerpt from Wiktionary: Irenaeus (English) · CC BY-SA 4.0

Wiktionary material is available under CC BY-SA 4.0.

Origin, language, and formation

Irenaeus is used in English. Its origins include Ancient Greek.

Irenaeus comes through Latin Īrēnaeus and Ancient Greek Εἰρηναῖος.

American usage and historical context

In the United States, 5 boys were recorded with the name Irenaeus between 2025 and 2025. Its highest annual count was 5 in 2025; its best national rank was #12,743 in 2025.

How common is Irenaeus?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 663,000
5 of 3,315,165 births
Among boys only
1 in 342,000
<0.01% of boys
Rank, 2025
#12,743
of 13,926 boys’ names in use
Coin-flip room size
459,581 kids
Even odds of a second one

Where Irenaeus sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 500Under 1%

Put another way: gather 459,581 children born in 2025 and it's an even bet that one of them is another Irenaeus. In a class of 30 the chance is Under 1%.

When Irenaeuss were born

Half of everyone ever recorded as Irenaeus was born before 2025 — so the typical Irenaeus is around 0 today.

Median birth year
2025
About 0 years old
Biggest decade
2020s
100.0% of all use
Born in the last 25 years
100.0%
A modern name
Recorded since 1950
5
People you could plausibly meet
Choose a decade

2020s — 100.0% of all recorded uses (5).

Is Irenaeus rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
—
Not ranked then
Rank vs 5 years ago
New entry
Not ranked then
Rank vs 10 years ago
—
Not ranked then
Births vs 10 years ago
—
Not published both years
Share of its own peak
100.0%
Peak was 2025 (5)
Years since peak
Peaking now
At its all-time high
Year-to-year steadiness
Not enough data
Too few years
Best rank ever
#12,743
2025

Irenaeus by the numbers

The raw record for each sex the name is used for.

As a boy's name

Rank in 2025
#12,743
Trend vs 5 yrs ago
New entry
Best rank ever
#12,743
2025
Peak year
2025
5 that year
First recorded
2025
Last recorded
2025
All-time count
5
Count in 2025
5

Names similar to Irenaeus

Matched on shared beginnings and endings, similar length, and comparable popularity.

AtraeusIredellAlphaeusZachaeusAsmodeusArtreusAidoneusMatthaeusAstraeusIreonAreusIreoluwaIretomiwaIremideMorpheusCornelieusIreneoPhinnaeusTimaeusPerceusZagreusArceusDarreusIrey

Sibling names for Irenaeus

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Irenaeus

Top names of 2025, Irenaeus's peak yearThe 2020s in fullOther names that peaked in 2025Boys' names starting with I