Sibling names for Erin
Names that sound like they belong in the same family as Erin usually share its era. These sister and brother names rose and fell on a similar curve to Erin, whose busiest decade was the 1980s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Erin
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Crystal | crystal (word name) | #1,145 | 1,130 | 1980s |
| Tabitha | "gazelle" | #1,308 | 775 | 1980s |
| Brandy | brandy (liquor) | #3,072 | 246 | 1980s |
| Nicole | victory of the people (feminine of Nicholas) | #383 | 4,660 | 1980s |
| Natasha | pet form of Natalia; 'Christmas' | #1,148 | 1,382 | 1980s |
| Tiffany | manifestation of God (Epiphany) | #880 | 1,530 | 1980s |
| Alicia | Latinized form of Alice ('noble kind') | #460 | 3,597 | 1980s |
| Christina | Christian (Latin) | #770 | 2,028 | 1980s |
| Katrina | form of Catherine | #2,226 | 575 | 1980s |
| Kara | variant of Cara ('dear') | #1,075 | 1,462 | 1980s |
| Meredith | great lord (Welsh) | #469 | 2,965 | 1980s |
Brother names for Erin
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Travis | from Old French travers (crossing) | #434 | 4,202 | 1980s |
| Adam | man; earth | #101 | 17,790 | 1980s |
| Jeremy | God exalts | #292 | 6,803 | 1980s |
| Casey | watchful (Irish Ó Cathasaigh) | #320 | 4,920 | 1980s |
| Ryan | #99 | 20,611 | 1980s | |
| Derek | ruler of the people (from Theodoric) | #284 | 6,039 | 1980s |
| Jonathan | God has given | #89 | 20,629 | 1980s |
| Aaron | #80 | 22,246 | 1980s |
Erin's era
Erin ranked #833 for girls in 2025, against #336 in 2015. Its best year was 1983, at #18. 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, Erin included.
Girls: Maria, Lydia, Cecilia, Julia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Victor, Oscar.
Same era, but close to Erin
These names follow Erin's curve too, but we left them out above because they share a first letter or an ending with Erin. Some parents like that echo; if you do, start here.
- Dustin same ending as Erin
How these were chosen
Each suggestion's share of US babies has followed a curve close to Erin's since 1880, and its recent number of babies is within about twelve times Erin's, so the names are in the same league. Names starting with the same letter as Erin or with the same ending are left out, so the names go together without matching. Spellings of Erin itself are excluded.