Willilam
Boys' nameMeaning not yet documented
Willilam has been given to 22 babies in the U.S. since 1967. It was used fewer than 5 times in 2025, so it doesn't appear in the latest year's list — today it's a genuinely uncommon pick. Its peak year was 1973, with 6 recorded.
Babies named Willilam, 1988
1 in 616,000
Willilam over time, 1880–2025
Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.
How common is Willilam?
Willilam had fewer than 5 recorded uses in 2025, so these figures use 1988, the last year it was published.
- Among all babies, 1988
- 1 in 616,000
- 6 of 3,694,212 births
- Among boys only
- 1 in 319,000
- <0.01% of boys
- Rank, 1988
- Unranked
- Fewer than 5 uses
- Coin-flip room size
- 426,773 kids
- Even odds of a second one
Where Willilam sits on the popularity scale
Chance at least one other child shares the name
If the other children were drawn at random from the 1988 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.
Put another way: gather 426,773 children born in 1988 and it's an even bet that one of them is another Willilam. In a class of 30 the chance is Under 1%.
When Willilams were born
Half of everyone ever recorded as Willilam was born before 1973 — so the typical Willilam is around 52 today.
- Biggest decade
- 1980s
- 50.0% of all use
- Born in the last 25 years
- 100.0%
- A modern name
- Recorded since 1950
- 22
- People you could plausibly meet
1980s — 50.0% of all recorded uses (11).
Is Willilam rising or falling?
Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.
- Rank vs 1 year ago
- —
- Not ranked then
- Rank vs 5 years ago
- New entry
- Not ranked then
- Rank vs 10 years ago
- —
- Not ranked then
- Births vs 10 years ago
- —
- Not published both years
- Share of its own peak
- 0%
- Peak was 1973 (6)
- Years since peak
- 52
- Years
- Year-to-year steadiness
- Not enough data
- Too few years
Spellings of Willilam
Willilam is not the most common spelling — William is, with 99.6% against Willilam's <0.01%.
Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.
Willilam by the numbers
The raw record for each sex the name is used for.
Names similar to Willilam
Matched on shared beginnings and endings, similar length, and comparable popularity.
Sibling names for Willilam
Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.