Given name
Thaddius
“having heart”
Thaddius is a variant of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Meaning & origin
What it means
Thaddius is a variant of Thaddeus. One Aramaic interpretation is “having heart.” Its derivation is not certain.
Explained through its name family
Where it comes from
Thaddius is a variant of Thaddeus. Thaddeus has been associated with Aramaic and Greek naming traditions. The precise derivation is uncertain.
Explained through its name family
The story
Published U.S. birth records include this spelling as early as 1916. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Thaddius through the years
- Babies since 1880
- 593
- 593 boys · 0 girls
- Most popular year
- 1989
- 18 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 5 in 2023. Later missing counts do not mean the name went unused. Its largest published annual count for boys was 18 in 1989. Published U.S. population figures for this spelling include 456 as a first name in 2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.
Thaddius’s family of names
Thaddius has a related form in Thaddeus.
Inner ring: spellings · outer: nicknames and forms.
Nicknames & forms 1
Diminutives, pet forms, short forms and variants used alongside the name.
Spellings & scripts 1
The same name written differently, including transliterations into other scripts.
Similar names
If you love Thaddius, these share its style, era, origin or sound, from outside its own family.
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