Guillem

resolute protector — from William
Occitan origin · Boy name
97% boys3% girls
#1708US 2023
10Births / yr
Stable
Top 1.3%Percentile

What does Guillem mean and where does it come from?

Guillem is a variant of the name William, derived from the Germanic elements 'wil' meaning 'will' or 'desire' and 'helm' meaning 'helmet' or 'protection'.

Cultural significance
Guillem is commonly used in Occitan-speaking regions, particularly in southern France, and reflects the cultural heritage of the area.
Peak popularity
Reached #1708 in 2015 — currently #1708 in the US.
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Related Reading
Occitan-origin baby names with timeless appeal
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How else can you spell Guillem?

Same sound, different look — useful if you want something slightly more distinctive

What middle names flow best with Guillem?

Guillem works best with short, strong middle names — one or two syllables keep the full name from becoming a mouthful

Guillem Jack
One syllable · timeless choice
Guillem John
One syllable · timeless choice
Guillem Luke
One syllable · timeless choice
Guillem Miles
One syllable · vintage charm
Guillem Beau
One syllable · on the rise
Guillem Brooks
One syllable · timeless choice
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Middle Names
The best middle names for Guillem
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How popular is Guillem right now?

Holding steady — currently #1708 in the US out of 135.5k tracked names

US Trend 20192023#1708 · Top 1.3%
2019
2020
2021
2022
2023
YearUS RankBirthsvs Prior Year
2023#170810stable
2022#170810stable
2021#170810stable
2020#170810stable
2019#170810
💎Guillem is exceptionally rare — it does not appear in US Social Security records, meaning fewer than 5 babies per year have received this name.

What are good nicknames for Guillem?

CROATIAN
Vilko
DUTCH
JellePimWilWillyWim
ENGLISH
BillBillieBillyLiamWilWillWillieWilly
ESPERANTO
Vilĉjo

Famous people named Guillem

Gd
Guillem de Castro
A Spanish playwright from the 17th century known for his contributions to Spanish theater.
Gd
Guillem de Montgrí
A medieval Catalan nobleman and military leader.
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Celebrity Names
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Common questions about the name Guillem

What does the name Guillem mean?
Guillem means "resolute protector — from William" — a name rooted in Occitan tradition that carries both historical depth and timeless appeal. The meaning reflects values that have made this name endure across generations.
How popular is the name Guillem?
Guillem is currently a distinctive and less common name as a baby name in the US and is holding steady in popularity, a reliable classic that parents consistently choose.
What is the cultural origin of Guillem?
Guillem originates from Occitan tradition. Occitan names tend to carry strong cultural heritage and have spread across the world through migration, literature, and religion over centuries.
Is Guillem a common or rare name?
Guillem is a distinctive choice that balances familiarity with individuality. It strikes a balance between standing out and fitting in.
Is Guillem more of a girl or boy name?
Guillem is primarily used as a boy name, giving it a clear, timeless character while remaining accessible to modern families.