Sibling names for Thaddeus
Names that sound like they belong in the same family as Thaddeus usually share its era. These sister and brother names rose and fell on a similar curve to Thaddeus, whose busiest decade was the 2010s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Thaddeus
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Miriam | #246 | 6,183 | 1920s | |
| Juana | #1,223 | 939 | 1990s | |
| Antonia | feminine of Antonius | #1,279 | 1,035 | 1990s |
| Katherine | #186 | 8,684 | 1980s | |
| Elissa | #1,848 | 722 | 1980s | |
| Leonor | #2,267 | 336 | 1920s | |
| Olympia | #2,210 | 374 | 1920s | |
| Eileen | #654 | 2,308 | 1950s | |
| Petra | #1,372 | 748 | 1920s | |
| Cecilia | from the Caecilius family (perhaps 'blind') | #108 | 10,913 | 2010s |
| Ines | #1,111 | 778 | 2010s | |
| Simona | #3,509 | 236 | 2010s |
Brother names for Thaddeus
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Angelo | angel, messenger | #304 | 5,529 | 2000s |
| Caesar | #2,843 | 233 | 2010s | |
| Carlo | man, free man (Italian Charles) | #869 | 1,067 | 1970s |
| Victor | conqueror | #211 | 8,636 | 1990s |
| Manuel | God is with us | #371 | 4,928 | 1990s |
| Lionel | little lion | #659 | 2,417 | 2010s |
| Malcolm | devotee of Saint Columba | #272 | 5,931 | 1990s |
| Clayton | clay settlement | #300 | 5,717 | 1990s |
| Constantine | #1,573 | 490 | 2010s | |
| Alfonso | "noble" + "ready" | #1,012 | 1,215 | 1990s |
| Jean | French feminine form of John (Jeanne) | #1,172 | 756 | 1920s |
| Gregorio | #2,336 | 277 | 1990s |
Thaddeus's era
Thaddeus ranked #798 for boys in 2025, against #705 in 2015. Its best year was 1918, at #307. Names that rose and fell with it share its period feel, which keeps the set consistent.
Timeless names that go with any sibling
These names have been used steadily for a hundred years, so they sit comfortably next to a name from any era, Thaddeus included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Julia, Miriam. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Thaddeus's since 1880, and its recent number of babies is within about twelve times Thaddeus's, so the names are in the same league. Names starting with the same letter as Thaddeus or with the same ending are left out, so the names go together without matching. Spellings of Thaddeus itself are excluded.