Sibling names for Bill
Names that sound like they belong in the same family as Bill usually share its era. These sister and brother names rose and fell on a similar curve to Bill, whose busiest decade was the 1940s, and are about as common, so neither child's name will feel dated or unusual next to the other.
Sister names for Bill
| Name | Meaning | Rank 2025 | Babies, last 5 years | Peak decade |
|---|---|---|---|---|
| Glenna | feminine of Glen; "valley" | #12,349 | 32 | 1940s |
| Nelda | #9,906 | 28 | 1930s | |
| Margie | pet form of Margaret | #6,730 | 99 | 1920s |
| Phyllis | foliage (Greek) | #12,873 | 53 | 1940s |
| Roberta | feminine of Robert, 'bright fame' | #2,809 | 300 | 1940s |
| Jeanette | little Jean (Jane) | #2,391 | 336 | 1930s |
| Arlene | 19th-century coinage | #1,632 | 585 | 1930s |
| Sally | pet form of Sarah | #1,158 | 965 | 1950s |
| Geraldine | coined for 'one of the Fitzgeralds' | #2,447 | 565 | 1930s |
Brother names for Bill
Bill's era
Bill ranked #5,235 for boys in 2025, against #3,377 in 2015. Its best year was 1931, at #57. 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, Bill included.
Girls: Elizabeth, Maria, Lydia, Cecilia, Julia, Miriam. Boys: Samuel, Anthony, Wesley, Vincent, Calvin, Victor.
Same era, but close to Bill
These names follow Bill's curve too, but we left them out above because they share a first letter or an ending with Bill. 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 Bill's since 1880, and its recent number of babies is within about twelve times Bill's, so the names are in the same league. Names starting with the same letter as Bill or with the same ending are left out, so the names go together without matching. Spellings of Bill itself are excluded.