Sibling names for Cassian
Names that sound like they belong in the same family as Cassian usually share its era. These sister and brother names rose and fell on a similar curve to Cassian, whose busiest decade was the 2020s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Cassian
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Lakelynn | #498 | 1,906 | 2020s | |
| Lowen | #1,639 | 406 | 2020s | |
| Keylani | #1,376 | 560 | 2020s | |
| Renley | #1,314 | 826 | 2020s | |
| Xolani | #1,124 | 821 | 2020s | |
| Misk | #1,764 | 401 | 2020s | |
| Jream | #518 | 2,052 | 2020s | |
| Samadhi | #1,346 | 649 | 2020s | |
| Winslow | #1,169 | 618 | 2020s | |
| Murphy | descendant of Murchadh, 'sea warrior' (Irish surname) | #397 | 2,862 | 2020s |
| Indie | #634 | 2,414 | 2020s | |
| Emryn | #1,416 | 753 | 2020s |
Brother names for Cassian
Cassian's era
Cassian ranked #479 for boys in 2025, against #4,915 in 2015. Its best year was 2025, at #479. 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, Cassian included.
Girls: Elizabeth, Maria, Lydia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Victor, Oscar.
Same era, but close to Cassian
These names follow Cassian's curve too, but we left them out above because they share a first letter or an ending with Cassian. Some parents like that echo; if you do, start here.
How these were chosen
Each suggestion's share of US babies has followed a curve close to Cassian's since 1880, and its recent number of babies is within about twelve times Cassian's, so the names are in the same league. Names starting with the same letter as Cassian or with the same ending are left out, so the names go together without matching. Spellings of Cassian itself are excluded.