Sibling names for Margo
Names that sound like they belong in the same family as Margo usually share its era. These sister and brother names rose and fell on a similar curve to Margo, 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 Margo
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Lana | #406 | 3,913 | 1940s | |
| Laurel | laurel, bay tree | #734 | 2,033 | 1950s |
| Francine | from Frances; "Frenchwoman" | #1,850 | 437 | 1950s |
| Gwen | white, fair, blessed (Welsh) | #725 | 1,782 | 1950s |
| Rosalyn | variant of Rosaline | #1,051 | 1,415 | 1950s |
| Charlene | feminine of Charles (19th-century coinage) | #1,948 | 541 | 1950s |
| Sandra | short form of Alexandra | #1,210 | 1,155 | 1940s |
| Sharon | the Sharon plain | #1,256 | 934 | 1950s |
| Kathleen | Irish form of Catherine | #1,156 | 1,162 | 1950s |
| Betsy | pet form of Elizabeth | #2,724 | 367 | 1950s |
| Joy | joy | #419 | 3,604 | 1950s |
Brother names for Margo
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Alan | #191 | 10,204 | 1950s | |
| Johnny | pet form of John ('God is gracious') | #458 | 3,605 | 1950s |
| Donnie | pet form of Donald; "world ruler" | #1,796 | 449 | 1950s |
| Gary | spear (from names in Gar-/Ger-) | #1,073 | 1,081 | 1950s |
| Sammy | #1,864 | 534 | 1940s | |
| Danny | pet form of Daniel, 'God is my judge' | #628 | 2,331 | 1950s |
| Eddie | pet form of Edward, Edgar, Edwin | #861 | 1,431 | 1950s |
| Freddy | pet form of Frederick | #1,422 | 702 | 1950s |
| Douglas | black stream | #807 | 1,595 | 1950s |
| Bruce | #536 | 2,735 | 1950s |
Margo's era
Margo ranked #559 for girls in 2025, against #1,277 in 2015. Its best year was 1951, at #295. 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, Margo included.
Girls: Elizabeth, Lydia, Cecilia, Julia, Nina, Carmen. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Margo
These names follow Margo's curve too, but we left them out above because they share a first letter or an ending with Margo. 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 Margo's since 1880, and its recent number of babies is within about twelve times Margo's, so the names are in the same league. Names starting with the same letter as Margo or with the same ending are left out, so the names go together without matching. Spellings of Margo itself are excluded.