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What does Thaddius mean?

Thaddius /thad-dius/ as a name for boys. Thaddius' name origin is Aramaic, and the name Thaddius means "heart". Thaddius is a version, with the suffix -ius, of Thaddeus (Aramaic): also possibly derives from Theodorus.


Thaddius has 5 variants: Thaddaeus, Thaddaios, Thaddaos, Thaddaus and Thadeus.

Thaddius has 1 more relation via Thaddeus: Taddeusz.

Kreatif forms:
(male) Thordius, Traudius, ..

(female) Thadie, Thadtais, ..

How popular is Thaddius?

Thaddius is an uncommon first name for men. Thaddius is an equivalently rare surname too for all people. (2000 U.S. Demographics)


Ranking and usage % can show different trends depending on the distribution of names that year.

Prominent varying forms of Thaddius (not ranked) are Thaddeus (#732 from recent data) and Thadeus. Other forms, like Thaddaos, are uncommon. Adoption of these relations of Thaddius reached its most widespread a century ago (average #1123) and is somewhat less today. Below is a graphed comparison of the history of Thaddius and related names. (Top 2000 Names, 2014)

Top 2000 baby names ranking of Thaddeus, Thadeus in U.S.

Top 100 baby names ranking of Thaddius and related baby names outside U.S.

Similar Names


Recommended names are Agathius, Amadeus, Anastius, Andrius, Arcadius, Arkadius, Blasius, Caddis, Caddiss, Cadmus, Caius, Cassius, Chaddie, Claudius, Dacius, Darius, Darrius, Egidius, Esavius (see Eusebius), Fabius, Flavius, Gaddis, Gaius, Jarius, Kadmus, Marius, Shamus, Stasius, Tacitus, Tadd, Taddeo, Tadi, Tadio, Tadzio, Tallis, Tandie, Tannis, Taurus, Tavis, Teddie, Terrius, Thad, Thady, Thaine, Thanasis, Thandey, Thandie, Thandiwe, Thandy, Thaniel, Thedric, Thedrick, Theodorus, Theodosius, Theseus, Thijs, Thonus, Travis and Traviss. These names tend to be more frequently used than Thaddius.