Given name
Tertius
“the third-born child”
Tertius is used as a given name. One Greek interpretation is “the third-born child.”
Original GreekΤερτιος
Meaning & origin
What it means
One Greek interpretation is “the third-born child.”
Where it comes from
An origin associated with this spelling is Greek.
The story
Published U.S. birth records include this spelling as early as 1987. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
In the Bible
In the Bible, the name Tertius appears in Romans 16:22, Luke 10:1.
- Romans 16:22
- Luke 10:1
From biblical name research
Tertius through the years
- Babies since 1880
- 6
- 6 boys · 0 girls
- Most popular year
- 1987
- 6 babies
- 2025
- 0
- Outside the ranked list
- 2021–25 vs 2016–20
- —
- Too few births to compare
By the numbers
The most recent published U.S. birth count for boys is 6 in 1987. Later missing counts do not mean the name went unused.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Tertius’s family of names
In Latin usage, Tertius has a conventional equivalent in the Polish form Tercjusz. Tertius has a related form in Tertia.
Inner ring: nicknames and forms · outer: across languages.
Nicknames & forms 1
Diminutives, pet forms, short forms and variants used alongside the name.
Across languages 1
Equivalents and cognates in other languages, plus older forms it grew from.
See also 1
Names our sources mention alongside this one. They are related in story or meaning, not forms of this name.
People named Tertius
Listed by how widely each person is written about, which says nothing about the name itself.
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