Sibling names for Caius
Names that sound like they belong in the same family as Caius usually share its era. These sister and brother names rose and fell on a similar curve to Caius, 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 Caius
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Layan | softness, gentleness | #831 | 1,237 | 2020s |
| Klarity | #791 | 479 | 2020s | |
| Seraphina | from 'seraphim', fiery angels | #600 | 1,597 | 2010s |
| Maisie | pet form of Margaret ('pearl') | #233 | 5,335 | 2020s |
| Emerie | #553 | 2,667 | 2020s | |
| Elliotte | #2,360 | 347 | 2010s | |
| Azalea | azalea (flower) | #278 | 4,358 | 2020s |
| Joud | #4,403 | 141 | 2010s | |
| Adalina | #1,341 | 779 | 2010s | |
| Lynlee | #1,751 | 549 | 2010s | |
| Livvy | #1,343 | 450 | 2020s | |
| Anora | #1,485 | 452 | 2010s |
Brother names for Caius
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Stellan | #1,140 | 644 | 2020s | |
| Roran | #3,029 | 214 | 2010s | |
| Azariah | God has helped (biblical) | #472 | 2,628 | 2020s |
| Ahaan | #1,621 | 430 | 2020s | |
| Bastian | #1,021 | 955 | 2010s | |
| Bowen | son of Owen | #266 | 5,019 | 2020s |
| Lyam | #1,086 | 868 | 2020s | |
| Zylan | #2,883 | 199 | 2010s | |
| Kayson | #264 | 6,143 | 2020s | |
| Eesa | #1,855 | 364 | 2010s | |
| Rook | #1,972 | 307 | 2020s |
Caius's era
Caius ranked #927 for boys in 2025, against #1,289 in 2015. Its best year was 2025, at #927. 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, Caius included.
Girls: Elizabeth, Maria, Lydia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Victor, Oscar.
Same era, but close to Caius
These names follow Caius's curve too, but we left them out above because they share a first letter or an ending with Caius. Some parents like that echo; if you do, start here.
- Copper same first letter as Caius
How these were chosen
Each suggestion's share of US babies has followed a curve close to Caius's since 1880, and its recent number of babies is within about twelve times Caius's, so the names are in the same league. Names starting with the same letter as Caius or with the same ending are left out, so the names go together without matching. Spellings of Caius itself are excluded.