The boy's name Thaddius \th(ad)-dius\ is a variant of Thaddeus.
The baby name Thaddius sounds like Thaddaus, Thadeus, Thaddaeus, Thaddaos and Thaddaios. Other similar baby names are Caddis, Caddiss and Gaddis.
Thaddius is a very rare male first name and a very rare surname (source: 1990 U.S. Census). Displayed below is the baby name popularity trend for the boy's name Thaddius. Click here to compare Thaddius with related baby names.
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