Guillermo
A boys’ name of Germanic origin, meaning resolute protector; a form of William.
How Guillermo has moved
View as table
| Year | US rank |
|---|---|
| 2015 | #662 |
| 2016 | #754 |
| 2017 | #795 |
| 2018 | #751 |
| 2019 | #746 |
| 2020 | #832 |
| 2021 | #812 |
| 2022 | #843 |
| 2023 | #839 |
| 2024 | #832 |
| 2025 | #902 |
Guillermo by the numbers
Guillermo was given to 287 American babies in 2017, the most recent full year we hold.
Its American peak was 693 babies in 1998, making it a 1990s name.
At its height, in 2000, about 1 in 3,200 American boys born that year was called Guillermo.
Other names that come from William
Like Guillermo, each of these traces back to William: a form of it, a name built from it, or a son or daughter of it. Not always the same sex.
- Wilsonson of William, resolute protector402 in the US (2017)
- Billieresolute protector; a form of William331 in England and Wales (2025)
- Willieresolute protector; a form of William286 in the US (2017)
- Willresolute protector; a form of William237 in the US (2017)
- Willemresolute protector; a form of William55 in the US (2017)
- Willisresolute protector; a form of William47 in the US (2017)
- Billresolute protector; a form of William9 in England and Wales (2025)
- Williamsson of William; resolute protector42 in the US (2017)
Spelled almost the same
Other names in the records within a letter or two of Guillermo. Close spellings are not always related names, but they are usually worth seeing together.
Other names that mean a protector
Like Guillermo, each of these has a protector in its meaning. Different names, different histories, the same idea.
- Liamresolute protector; short form of William18,764 in the US (2017)
- Williamresolute protector14,922 in the US (2017)
- Alexanderdefender of the people12,488 in the US (2017)
- Parkerkeeper of the park; park ranger5,833 in the US (2017)
- Alexisdefender, helper2,847 in the US (2017)
- Alexdefender, helper; short form of Alexander or Alexis2,766 in the US (2017)
Other names that mean strength
Like Guillermo, each of these has strength in its meaning. Different names, different histories, the same idea.
- Liamresolute protector; short form of William18,764 in the US (2017)
- Williamresolute protector14,922 in the US (2017)
- Ethanstrong, enduring12,398 in the US (2017)
- GabrielGod is my strength9,110 in the US (2017)
- Aaronmountain of strength; exalted7,185 in the US (2017)
- Aubreyelf ruler; noble strength6,029 in the US (2017)
Names about as common as Guillermo
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