MallowbyNames

Willliam

WIL-ee-um · A respelling of William, meaning 'resolute protector'.

2025 rank (boys)
#9,714
Babies named in 2025
7
Peak popularity
1922
2025 frequency
1 in 244,011 boys
Usually for
Boys
Trend
Holding steady

Holding steady, #9,714 for boys today.

Popularity of Willliam since 1922

Babies named Willliam per year in U.S. Social Security records. Raw births topped out in 2006, but relative to how few babies were recorded back then, Willliam's real moment was 1922.

481219602000Most births 2006Boys
Data table (by decade)
DecadeBoys
1920s7
1930s0
1940s5
1950s12
1960s24
1970s15
1980s41
1990s46
2000s65
2010s45
2020s13

Meaning & origin

Willliam, a respelling of the classic William, is an extremely rare variant that has never achieved wide usage. It first appeared in U.S. records in 1922, its peak year, and has since remained consistently uncommon. In 2025, it ranked 9,714th, with only 1 in every 244,011 newborn boys given the name. The name follows a tradition of alternative spellings for established names, though it has never seen significant adoption. Its stable trajectory suggests it remains a niche choice for parents seeking a distinctive twist on a familiar name.

Willliam is a variant spelling of William, derived from the Germanic name Willahelm, composed of 'wil' (will, desire) and 'helm' (helmet, protection). The name was introduced to England by the Normans and became one of the most enduringly popular names in the English-speaking world. This particular spelling is less common but follows a pattern of doubling the 'l' in some names.

Nicknames & variants

Nicknames: Will, Bill, Liam

Variants: William, Willam, Willem

Sibling names for Willliam

Names that share Willliam's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

W is for Willliam, our favorite little boy.

W is for Willliam…”

In a Mallowby alphabet book, Willliam's letter becomes Willliam's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Willliam's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Willliam mean?
Willliam is a variant spelling of William, which means 'resolute protector' from the Germanic elements 'wil' (will, desire) and 'helm' (helmet, protection).
How popular is Willliam?
In 2025, Willliam ranked 9,714th in popularity for boys, with approximately 1 in every 244,011 newborn boys receiving the name.
Is Willliam a boy's name?
Yes, Willliam is exclusively used for boys.