William Casillas

Name meaning, origin and global statistics

William Casillas — strong protector
3.7 million People worldwide
United States Most common in
1970s Peak popularity
Gender
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William Casillas is a name that combines Germanic origins. The first name William is a masculine given name of Germanic origin. From the Old High German Willahelm, composed of wil (will, desire) and helm (helmet, protection). Introduced to England by William the Conqueror in 1066. The surname Casillas: Andrés Casillas de Alba (born 1934), Mexican architect Giovani Casillas (born 1994), Mexican association football player Graciela Casillas (born 1957), American boxer and kickboxer Hugo Casillas (born 1981), Mexican association football player Iker Casillas (born 1981), Spanish football goalkeeper Jesús Casillas Romero (born 1962), Mexican politician Luis Casíllas (1905–?), Mexican modern pentathlete Martín Casillas (1556–1618), Spanish architect Jonathan Casillas (born 1987), American football linebacker Susana Casillas, Mexican visual artist Toñín Casillas (born 1935), Puerto Rican basketbal. William is one of the most widespread first names worldwide, carried by approximately 3.7 million people globally, with the highest concentration in United States. The name William reached peak popularity in the 1970s, reflecting the naming trends of that era.

Etymology & Origin

First Name: William

Meaning: strong protector

Germanic

From the Old High German Willahelm, composed of wil (will, desire) and helm (helmet, protection). Introduced to England by William the Conqueror in 1066.

Surname: Casillas

Spanish

Andrés Casillas de Alba (born 1934), Mexican architect Giovani Casillas (born 1994), Mexican association football player Graciela Casillas (born 1957), American boxer and kickboxer Hugo Casillas (born 1981), Mexican association football player Iker Casillas (born 1981), Spanish football goalkeeper Jesús Casillas Romero (born 1962), Mexican politician Luis Casíllas (1905–?), Mexican modern pentathlete Martín Casillas (1556–1618), Spanish architect Jonathan Casillas (born 1987), American football linebacker Susana Casillas, Mexican visual artist Toñín Casillas (born 1935), Puerto Rican basketbal.

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Geographic Distribution

The first name William is distributed across the globe, with the highest concentrations in the following countries:

United States 46%
United Kingdom 24%
Germany 13%
Australia 9%
Canada 8%

Popularity Over Time

Popularity of the name William by decade, based on birth registration data:

1900s
1910s
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
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Name Variants & Related Names

The name William has several variants and related forms across different languages and cultures:

  • Will
  • Bill
  • Willy
  • Billy
  • Guillaume
  • Wilhelm
  • Guillermo

Notable People Named William Casillas

People listed above share this name. Listed for informational purposes only. Source: Wikipedia.

Numerology

According to Pythagorean numerology, each letter in a name carries a numerical value. Here are the key numbers for William Casillas:

11
Expression Number

Intuition and inspiration (Master Number 11). Amplifies spiritual awareness, creative vision and sensitivity.

3
Soul Urge Number

Creativity and self-expression. Associated with artistic flair, optimism and sociability — a natural communicator.

8
Personality Number

Ambition and material success. Represents power, business acumen and the drive to achieve significant goals.

Numerology is a cultural tradition for exploring symbolism in names. Results are for entertainment purposes.

Frequently Asked Questions

What is the origin of the first name William?
The first name William originates from Germanic. From the Old High German Willahelm, composed of wil (will, desire) and helm (helmet, protection). Introduced to England by William the Conqueror in 1066.
When was William most popular?
The name William reached its peak popularity during the 1970s.
What is the origin of the surname Casillas?
The surname Casillas originates from Spanish. Andrés Casillas de Alba (born 1934), Mexican architect Giovani Casillas (born 1994), Mexican association football player Graciela Casillas (born 1957), American boxer and kickboxer Hugo Casillas (born 1981), Mexican association football player Iker Casillas (born 1981), Spanish football goalkeeper Jesús Casillas Romero (born 1962), Mexican politician Luis Casíllas (1905–?), Mexican modern pentathlete Martín Casillas (1556–1618), Spanish architect Jonathan Casillas (born 1987), American football linebacker Susana Casillas, Mexican visual artist Toñín Casillas (born 1935), Puerto Rican basketbal.
What are the origins of the name William Casillas?
The name William Casillas combines two different traditions: the first name William has Germanic roots, while the surname Casillas originates from Spanish.
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