Sibling names for Gwendolyn
Names that sound like they belong in the same family as Gwendolyn usually share its era. These sister and brother names rose and fell on a similar curve to Gwendolyn, whose busiest decade was the 1950s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Gwendolyn
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Marian | from Marion (Mary), or Mary + Ann | #1,103 | 1,023 | 1920s |
| Anita | pet form of Ana (Anne) | #1,342 | 791 | 1950s |
| Rosalind | "horse" + "soft, tender" | #1,521 | 773 | 1960s |
| Charlene | feminine of Charles (19th-century coinage) | #1,948 | 541 | 1950s |
| Kathleen | Irish form of Catherine | #1,156 | 1,162 | 1950s |
| Bernadette | feminine of Bernard; "brave as a bear" | #1,034 | 1,007 | 1960s |
| Betsy | pet form of Elizabeth | #2,724 | 367 | 1950s |
| Bonnie | pretty, fine (Scots) | #396 | 3,292 | 1940s |
| Francine | from Frances; "Frenchwoman" | #1,850 | 437 | 1950s |
| Yvonne | #2,063 | 422 | 1950s |
Brother names for Gwendolyn
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Dale | valley | #1,410 | 653 | 1950s |
| Kenneth | #294 | 6,344 | 1950s | |
| Bruce | #536 | 2,735 | 1950s | |
| Johnny | pet form of John ('God is gracious') | #458 | 3,605 | 1950s |
| Dennis | follower of Dionysus (Greek) | #707 | 1,992 | 1950s |
| Roger | famous spear (Germanic) | #834 | 1,712 | 1950s |
| Mickey | pet form of Michael; "who is like God?" | #2,048 | 459 | 1950s |
| Alan | #191 | 10,204 | 1950s | |
| Darrell | from d'Airel (Norman place name) | #1,691 | 588 | 1960s |
Gwendolyn's era
Gwendolyn ranked #360 for girls in 2025, against #406 in 2015. Its best year was 1951, at #112. 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, Gwendolyn included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Julia, Miriam. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Gwendolyn
These names follow Gwendolyn's curve too, but we left them out above because they share a first letter or an ending with Gwendolyn. 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 Gwendolyn's since 1880, and its recent number of babies is within about twelve times Gwendolyn's, so the names are in the same league. Names starting with the same letter as Gwendolyn or with the same ending are left out, so the names go together without matching. Spellings of Gwendolyn itself are excluded.