Sibling names for Jo
Names that sound like they belong in the same family as Jo usually share its era. These sister and brother names rose and fell on a similar curve to Jo, 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 Jo
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Patricia | noble, patrician | #1,336 | 983 | 1950s |
| Nancy | pet form of Ann (or Agnes) | #967 | 1,382 | 1950s |
| Marcia | feminine of Marcius (from Mars) | #3,434 | 188 | 1950s |
| Peggy | pet form of Margaret | #8,740 | 82 | 1950s |
| Beverly | beaver stream (place name) | #1,018 | 1,102 | 1950s |
| Barbara | foreign woman | #968 | 1,464 | 1940s |
| Gayle | 30 | 1950s | ||
| Glenda | holy + good (Welsh coinage) | #5,987 | 112 | 1950s |
Brother names for Jo
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Roger | famous spear (Germanic) | #834 | 1,712 | 1950s |
| Wayne | wagon maker (English surname) | #655 | 1,824 | 1950s |
| Dale | valley | #1,410 | 653 | 1950s |
| Gary | spear (from names in Gar-/Ger-) | #1,073 | 1,081 | 1950s |
| Dennis | follower of Dionysus (Greek) | #707 | 1,992 | 1950s |
| Freddie | pet form of Frederick | #1,510 | 414 | 1940s |
Jo's era
Jo ranked #4,028 for girls in 2025, against #5,043 in 2015. Its best year was 1947, at #51. 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, Jo included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Miriam, Nina. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Jo
These names follow Jo's curve too, but we left them out above because they share a first letter or an ending with Jo. 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 Jo's since 1880, and its recent number of babies is within about twelve times Jo's, so the names are in the same league. Names starting with the same letter as Jo or with the same ending are left out, so the names go together without matching. Spellings of Jo itself are excluded.