UK boy's name
Thaddeus
A masculine name of Aramaic origin meaning "heart" or "courageous heart".
For 2026, the newest official UK baby-name figures on this page are from 2024. That release is the current official benchmark rather than a forecast.
Thaddeus is a boy's name in the UK records. People looking for Thaddeus popularity in 2026 should use the latest official release, which is 2024 in this profile. In that release it ranked #2921, with 7 babies registered with the name. Its strongest year in the published records was 2017, with 17 births.
This profile covers 168 England and Wales registrations across 23 recorded years from 1996 to 2024. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.
The latest count is about 41% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 167 living people in the UK are called Thaddeus. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2025 or 2026.
Key insights
- • Thaddeus ranked #2921 for boys in England and Wales in 2024, with 7 registrations.
- • The name peaked in 2017, when 17 boys were registered as Thaddeus.
- • About 167 living people in the UK are estimated to have Thaddeus as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#2921
2024
Births in 2024
7
Latest year
Peak year
2017
17 births
Estimated living
167
2026
Meaning
What does Thaddeus mean?
The given name Thaddeus has its origins in the Aramaic language, derived from the word "thaddai" meaning "breast" or "courageous one". It is believed to have originated as early as the 1st century AD in the region of ancient Mesopotamia, which encompassed parts of modern-day Iraq, Iran, Syria, and Turkey.
One of the earliest recorded uses of the name Thaddeus can be found in the New Testament of the Bible, where it is listed as one of the names of the Twelve Apostles of Jesus Christ. Specifically, the apostle is referred to as "Judas, the brother of James", with Thaddeus being his alternate name.
In the 3rd century, a Christian text called the "Acts of Thaddeus" emerged, recounting the supposed missionary journey of the apostle Thaddeus (or Addai) to Edessa, an ancient city in modern-day Turkey. This text played a significant role in the spread of Christianity in the region.
Throughout history, several notable figures have borne the name Thaddeus. One of the earliest was Saint Thaddeus, a 4th-century Christian martyr from Mesopotamia who was executed for his faith during the reign of King Shapur II of Persia (309-379 AD).
In the 17th century, Thaddeus Kosciuszko (1746-1817) was a Polish-Lithuanian military engineer and a national hero who played a crucial role in the American Revolutionary War and the Polish-Lithuanian Commonwealth's uprising against Russia.
Another prominent figure was Thaddeus Stevens (1792-1868), a renowned American political leader and abolitionist who played a pivotal role in the abolition of slavery and the impeachment of President Andrew Johnson.
In the 19th century, Thaddeus Lowe (1832-1913) was an American aeronaut and inventor who pioneered the use of balloons for aerial reconnaissance during the American Civil War.
More recently, Thaddeus Seymour (1892-1984) was an American poet, author, and academic who served as the President of Wabash College and contributed significantly to the literary world.
These are just a few examples of the historical figures who have carried the name Thaddeus, a name with deep roots in ancient Aramaic culture and a significant presence in various religious, military, and literary contexts throughout the centuries.
Sourced from namecensus.com.
Popularity
Thaddeus over time
The chart below shows babies named Thaddeus registered in England and Wales in the years where the name appears in the published records, from 1996 to 2024. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Thaddeus, the clearest high point is 2017. The latest England and Wales figure is 7 births in 2024, compared with 17 at the peak.
Babies born per year
Decades
Thaddeus by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Thaddeus was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.
| Decade | Average rank | Total births | Years covered |
|---|---|---|---|
| 2020s | #2415 | 46 | 5 |
| 2010s | #2240 | 71 | 7 |
| 2000s | #2985 | 38 | 8 |
| 1990s | #2339 | 13 | 3 |
Related
Names similar to Thaddeus
- Thomas 160,894
- Tyler 42,147
- Theo 40,594
- Toby 32,482
- Theodore 30,211
- Tommy 25,300
- Teddy 20,781
- Taylor 14,354
- Tobias 13,102
- Tom 9,822
- Tristan 9,171
- Timothy 6,200
FAQ
Thaddeus: questions and answers
How popular is the name Thaddeus in the UK right now?
In 2024, Thaddeus was ranked #2921 for boys in England and Wales, with 7 births registered.
When was Thaddeus most popular?
The peak year on record was 2017, with 17 babies registered as Thaddeus in England and Wales.
What is the meaning and origin of Thaddeus?
A masculine name of Aramaic origin meaning "heart" or "courageous heart".
How many people are called Thaddeus in the UK?
A total of 168 babies have been registered as Thaddeus across the 23 years of ONS England & Wales records shown here.
Which records is this page based on?
The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.