Heart or courageous heart
A rare variant of Thaddeus, likely derived from the Aramaic word 'tadday' meaning heart or chest, implying courage. It is also sometimes associated with the Greek name Theodoros, meaning gift of God. In the New Testament, Thaddeus was one of the twelve apostles.
Fewer than 5 boys were named Thaddeaus in 2025.
Powerful U.S. Congressman and abolitionist leader
Polish-Lithuanian military engineer and hero of the American Revolution
Military general and antagonist in Marvel Comics · Marvel Universe
Professional NBA basketball player
US births per 5-year period, 1990–present (SSA data).
