Fionn Cassidy

Name meaning, origin and global statistics

Fionn Cassidy — fair, white
120K People worldwide
Ireland Most common in
2010s Peak popularity
Gender
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Fionn Cassidy is a name that combines Celtic origins. The first name Fionn is a masculine given name of Celtic origin. From Irish Gaelic fionn, meaning 'fair, white, bright.' Fionn mac Cumhaill was the legendary leader of the Fianna, the great Irish warriors. The surname Cassidy: Cassidy (Irish: Ó Caiside / Ó Casaide) is a common Irish surname and is sometimes used as a given name. The surname translates to "descendant of Caiside". Variations include: Cassady, Cassiday, Cassedy, Casadei and Cassedey. The family was originally a Munster sept called Uí Chaisín but in the 12th century a branch moved to Devenish Island in County Fermanagh, where they became a medical and poetic family, hereditary physicians to the Maguires. Fionn is a distinctive first name, carried by approximately 120K people globally, with the highest concentration in Ireland. The name Fionn reached peak popularity in the 2010s, reflecting the naming trends of that era.

Etymology & Origin

First Name: Fionn

Meaning: fair, white

Celtic

From Irish Gaelic fionn, meaning 'fair, white, bright.' Fionn mac Cumhaill was the legendary leader of the Fianna, the great Irish warriors.

Surname: Cassidy

Irish

Cassidy (Irish: Ó Caiside / Ó Casaide) is a common Irish surname and is sometimes used as a given name. The surname translates to "descendant of Caiside". Variations include: Cassady, Cassiday, Cassedy, Casadei and Cassedey. The family was originally a Munster sept called Uí Chaisín but in the 12th century a branch moved to Devenish Island in County Fermanagh, where they became a medical and poetic family, hereditary physicians to the Maguires.

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Geographic Distribution

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

Ireland 82%
United Kingdom 18%

Popularity Over Time

Popularity of the name Fionn 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 Fionn has several variants and related forms across different languages and cultures:

  • Finn
  • Finian
  • Finan

Notable People Named Fionn Cassidy

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 Fionn Cassidy:

3
Expression Number

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

7
Soul Urge Number

Wisdom and introspection. A deep, analytical mind drawn to philosophy, spirituality and the search for truth.

5
Personality Number

Freedom and adaptability. A dynamic, versatile personality that embraces change and seeks new experiences.

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 Fionn?
The first name Fionn originates from Celtic. From Irish Gaelic fionn, meaning 'fair, white, bright.' Fionn mac Cumhaill was the legendary leader of the Fianna, the great Irish warriors.
When was Fionn most popular?
The name Fionn reached its peak popularity during the 2010s.
What is the origin of the surname Cassidy?
The surname Cassidy originates from Irish. Cassidy (Irish: Ó Caiside / Ó Casaide) is a common Irish surname and is sometimes used as a given name. The surname translates to "descendant of Caiside". Variations include: Cassady, Cassiday, Cassedy, Casadei and Cassedey. The family was originally a Munster sept called Uí Chaisín but in the 12th century a branch moved to Devenish Island in County Fermanagh, where they became a medical and poetic family, hereditary physicians to the Maguires.
What are the origins of the name Fionn Cassidy?
The name Fionn Cassidy combines two different traditions: the first name Fionn has Celtic roots, while the surname Cassidy originates from Irish.
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