Meaning and Name Origin
Thaddeus \th(ad)-deus\ as a boys' name is pronounced THAD-ee-us. It is of Aramaic origin, and the meaning of Thaddeus is "heart". Also possibly derives from Theodorus, meaning "God's gift". Biblical: one of the 12 apostles. Jude is another form of the name.
Thaddeus has 1 feminine form: Thaddea.
Thaddeus is a somewhat popular first name for men (#611 out of 1220, Top 50%) but a rare last name for both adults and children. (2000 U.S. Census)
Presented below is the baby name popularity of Thaddeus for boys. Thaddeus reached its apex position of #375 in the U.S. during the years 1910-1919, and is at #732 presently. (2014 Birth Statistics)
Below is a graphed analysis of the popularity of the boy name Thaddeus and affiliated names. Popular varying forms of Thaddeus (#732 a year ago) rated in the Top 1000 are Judah (#243 a year ago), Judd, Jude (#162), Judson (#960), Tad and Thad. Usage of these boy names is at its peak presently, except for the versions Judson, Tad, Thad and Thaddeus which have become less stylish. Judah (#243) and Jude (#162) are two of the more fashionable names for newborns here, with Jude going through a revival in usage. (2014 Birth Statistics)