Given name & surname
Irenaeus
“a peaceful man”
Irenaeus is a variant of Irenio. One Spanish interpretation is “a peaceful man.”
Meaning & origin
What it means
Irenaeus is a variant of Irenio. One Spanish interpretation is “a peaceful man.”
Explained through its name family
Where it comes from
Irenaeus is a variant of Irenio. An origin associated with Irenio is Spanish.
Explained through its name family
How it developed
In English usage, Irenaeus developed from Εἰρηναῖος.
The story
Published U.S. birth records include this spelling as early as 2025. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Irenaeus through the years
- Babies since 1880
- 5
- 5 boys · 0 girls
- Most popular year
- 2025
- 5 babies
- 2025
- 5
- #12,747 for boys
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
In 2025, this name appeared in 5 U.S. birth records for boys, ranking No. 12,747 among boys’ names. The recent annual counts are too incomplete to establish a ten-year comparison.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Irenaeus’s family of names
In English usage, Irenaeus developed from the Ancient Greek form Εἰρηναῖος. In English usage, Irenaeus has a conventional equivalent in the Polish form Ireneusz. In English usage, Irenaeus has a conventional equivalent in the Spanish form Ireneo.
Inner ring: nicknames and forms · outer: across languages.
Around the world
Irenaeus has relatives in 15 languages.
12 related names in 15 languages. Point at a dot, or tab to the map and use the arrow keys.
Nicknames & forms 2
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 12
Equivalents and cognates in other languages, plus older forms it grew from.
- Ireneoderivative · Spanish, Italian
- إيريناوسequivalent
- ИринейRussian, rsk
- IrineuPortuguese
- IreneuszPolish
- Irénéederivative · French
- Εἰρηναῖοςroot · Ancient Greek
- Ирине́йRussian, Bulgarian