Thaddaus, of Latin origin, means 'to praise'. It is derived from the verb 'laudare', which translates to 'praise' in English. The name Thaddaus was borne by one of Jesus' apostles in the Bible, who is often referred to as Jude Thaddeus or Lebbaeus Thaddaeus. The name gained popularity during the Middle Ages and has since been used throughout Europe, particularly in Germany where it is often shortened to the familiar form 'Taddy'. However, its usage remains relatively uncommon compared to other names of similar origin.
"Thaddaus saw its peak popularity in 1988 with six births that year, compared to five in 1979. Overall, there were eleven babies named Thaddaus during those two years."