What does Tadeo mean?
Tadeo /ta-deo/ [3 sylls.] as a boys' name is pronounced ta-DAY-oh. It is of Spanish and Aramaic origin, and the meaning of Tadeo is "heart". Variant of Thaddeus.
How popular is Tadeo?
Tadeo is an uncommonly occurring given name for males but a very prominent surname for all people (#17170 out of 150436, Top 11%). (2000 U.S. Census)
Displayed below is an analysis of the usage of Tadeo and corresponding names. Thaddeus (#732 last year), Thad and Tad are the prominent varying forms of Tadeo (not ranked). These boy names were at the apex of their popularity during the years 1970-1979 (usage of 0.421%) and are now much less widespread (usage 0.0893%, down 78.8%), with the versions Tad, Thad and Thaddeus becoming less stylish. (Top 1000 Baby Names Statistics, 2014)